Upload original 多媒体技术 course files

补充资料-20261023/复习/~$复习.pptx

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+oid sha256:6d466fc942cacf02d93d87f2e2106ec2fdca4b0d49a858f1dc3c4616eaf84898
+size 165

补充资料-20261023/复习/复习.pptx

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+oid sha256:1da6efd22bc0f7eabf8528535890e735673ab18bc6a2d2b39800ca1f53eae119
+size 639196

补充资料-20261023/多媒体大作业/LSB PSNR 以及RS隐写分析.docx

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+version https://git-lfs.github.com/spec/v1
+oid sha256:8917d591a255c039270c33e7ef58245256de52f15578d468016a93066a696d08
+size 93205

补充资料-20261023/多媒体大作业/一种基于多变换的LSB隐写算法_徐江峰.caj

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+oid sha256:2f9d80f28e5fef629432d0ad6cdedc3cfdc55d2616ca2de65d36da6916697386
+size 294448

补充资料-20261023/多媒体大作业/分配.txt

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+����ʶ��    �̢ٳ����ɯ��������
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+ͼƬѹ��    �̢������̢ڷ���
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+ͼƬ����    �̢������̢���˧��
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+ͼ��ȥ��    �̢�������̢�л��
+ͼ����    �̢�����Ц�������֡���˼��
+����ʶ��    ������Ȼ��������
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+��Ե��ȡ    �̢��Ŵ�
+ͼ����    �̢�Ϳ־¡
+
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+��ý�����
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+�ҵ�ѧУ    �̢�����������ѡ̢ڻ�����
+�ҵ�ż��    �̢��������̢ڹ��򶫢۷�־ǿ
+�ҵļ���    �̢������á�������
+ȼ�����ֶ������  �̢�������
+�ҵ����    �̢�������̢���ܿ���������㡢������
+���ҽ���    �̢�����Ȼ������΢�����Ј�
+�ҵİ���    �̢ٹ����������̢ھ���������ǡ�����Ԫ
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补充资料-20261023/多媒体大作业/基于多变换的LSB隐写算法研究_李昊.caj

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+version https://git-lfs.github.com/spec/v1
+oid sha256:4f87ded83479cbabc53b04fbb4af4483c2a79d2576af5caf604aab35cc1bb95e
+size 5599388

补充资料-20261023/多媒体大作业/多媒体技术大作业实验报告2220171938王晨.doc

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+version https://git-lfs.github.com/spec/v1
+oid sha256:cd072891d97afeefd4e94aa88c6ada188a2731a8a02ee029bf12f9178048da3d
+size 7927296

补充资料-20261023/多媒体大作业/大作业心路历程.docx

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+oid sha256:1ce45bfc90b54b2df4cdec15b9af56f8e5d63bc145cb8436d192883ef3dd5ef2
+size 18271

补充资料-20261023/多媒体大作业/大作业选题.docx

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+oid sha256:cd4b47ca345aef87dfd6ee86fbb4057c7686757c4d33c68b13921fac98ad99ef
+size 13493

补充资料-20261023/多媒体大作业/王晨_2220171938/实验报告2220171938王晨.doc

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+oid sha256:cd072891d97afeefd4e94aa88c6ada188a2731a8a02ee029bf12f9178048da3d
+size 7927296

补充资料-20261023/多媒体大作业/王晨_2220171938/实验源码/GUI.fig

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+oid sha256:0dad3d17f65a283b1e09e7fc8a4a06e618727bbf454eea158ce05607d4965e8c
+size 73770

补充资料-20261023/多媒体大作业/王晨_2220171938/实验源码/GUI.m

@@ -0,0 +1,990 @@
+function varargout = GUI(varargin)
+clc;
+gui_Singleton = 1;
+gui_State = struct('gui_Name',       mfilename, ...
+                   'gui_Singleton',  gui_Singleton, ...
+                   'gui_OpeningFcn', @GUI_OpeningFcn, ...
+                   'gui_OutputFcn',  @GUI_OutputFcn, ...
+                   'gui_LayoutFcn',  [] , ...
+                   'gui_Callback',   []);
+if nargin && ischar(varargin{1})
+    gui_State.gui_Callback = str2func(varargin{1});
+end
+
+if nargout
+    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
+else
+    gui_mainfcn(gui_State, varargin{:});
+end
+function GUI_OpeningFcn(hObject, eventdata, handles, varargin)
+handles.output = hObject;
+guidata(hObject, handles);
+function varargout = GUI_OutputFcn(hObject, eventdata, handles) 
+function axes1_ButtonDownFcn(hObject, eventdata, handles)
+function pushbutton7_Callback(hObject, eventdata, handles)
+function axes4_CreateFcn(hObject, eventdata, handles)
+function axes3_ButtonDownFcn(hObject, eventdata, handles)
+function edit1_Callback(hObject, eventdata, handles)
+set(handles.edit1,'userdata',get(handles.edit1,'String'));
+key=get(handles.edit1,'userdata')
+function edit1_CreateFcn(hObject, eventdata, handles)
+if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
+    set(hObject,'BackgroundColor','white');
+end
+function edit2_Callback(hObject, eventdata, handles)
+function edit2_CreateFcn(hObject, eventdata, handles)
+if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
+    set(hObject,'BackgroundColor','white');
+end
+function pushbutton8_Callback(hObject, eventdata, handles)
+im1=get(findobj('tag','pushbutton1'),'userdata');
+im2=get(findobj('tag','qianru2'),'userdata');
+dif=abs(double(im1)-double(im2));
+axes(handles.axes7);
+imshow(dif);
+
+
+function pushbutton1_Callback(hObject, eventdata, handles)
+axis off;
+[filename_img pathname_img]=uigetfile({'*.bmp';'*.jpg';'*.*'},'ѡ������ͼƬ');
+str=[pathname_img filename_img];%ƴ��pathname��filename���γ�����·����
+img=imread(str);
+set(handles.pushbutton1,'userdata',img);
+axes(handles.axes1);%��axes1�ľ�������о������
+imshow(img);
+function pushbutton2_Callback(hObject, eventdata, handles)
+axis off;
+[filename_hide,pathname_hide] = uigetfile({'*.jpg';'*.bmp';'*.*'},'ѡ��ˮӡͼƬ');
+str1=[pathname_hide filename_hide];
+imhide=imread(str1);
+set(handles.pushbutton2,'userdata',imhide);
+axes(handles.axes3);
+imshow(imhide);
+
+
+function qianru1_Callback(hObject, eventdata, handles)
+axis off;
+img=get(findobj('tag','pushbutton1'),'userdata');
+imhide=get(findobj('tag','pushbutton2'),'userdata');
+[m,n,h]=size(img);
+[mhide,nhide,hhide]=size(imhide);
+imgR=img(:,:,1);
+imgG=img(:,:,2);
+imgB=img(:,:,3);
+imhideR=imhide(:,:,1);
+imhideG=imhide(:,:,2);
+imhideB=imhide(:,:,3);
+wcyuan=zeros(1,8);
+wcyin=zeros(1,8);
+
+imgRnew=imgR;
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgR(i,j));
+        [wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8)]=dec2bin_z(imhideR(i,j));
+        wcyuan(5)=wcyin(1);wcyuan(6)=wcyin(2);wcyuan(7)=wcyin(3);wcyuan(8)=wcyin(4);
+        imgRnew(i,j)=bin2dec_z(wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8));
+    end
+end
+imgGnew=imgG;
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgG(i,j));
+        [wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8)]=dec2bin_z(imhideG(i,j));
+        wcyuan(5)=wcyin(1);wcyuan(6)=wcyin(2);wcyuan(7)=wcyin(3);wcyuan(8)=wcyin(4);
+        imgGnew(i,j)=bin2dec_z(wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8));
+    end
+end
+imgBnew=imgB;
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgB(i,j));
+        [wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8)]=dec2bin_z(imhideB(i,j));
+        wcyuan(5)=wcyin(1);wcyuan(6)=wcyin(2);wcyuan(7)=wcyin(3);wcyuan(8)=wcyin(4);
+        imgBnew(i,j)=bin2dec_z(wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8));
+    end
+end
+
+%Ƕ����ɣ���ʼ����
+imgNew=zeros(m,n,h);
+imgNew(:,:,1)=imgRnew;
+imgNew(:,:,2)=imgGnew;
+imgNew(:,:,3)=imgBnew;
+axes(handles.axes4);
+imshow(uint8(imgNew));
+set(handles.qianru1,'userdata',imgNew);
+h3=warndlg('�������','������ʾ')
+function baocun1_Callback(hObject, eventdata, handles)
+imgNew=get(findobj('tag','qianru1'),'userdata');
+[filename,filepath]=uiputfile({'*.bmp'},'�����ļ�');
+str=[filepath,filename];
+imwrite(uint8(imgNew),str);
+function jiema1_Callback(hObject, eventdata, handles)
+[filename filepath]=uigetfile({'*.bmp';'*.*'},'������ͼƬ');
+str=[filepath filename];
+Img=imread(str);
+[m,n,h]=size(Img);
+%ֻ��֪��ͼƬԭ������״��������ȡ��������ˮӡ,
+%��Կ����ˮӡͼ��ĸߺͿ��������346����350����Կ����346350��
+str1=get(findobj('tag','edit1'),'userdata');
+key1=str1
+mhide=str2double([str1(1),str1(2),str1(3)]);%��
+nhide=str2double([str1(4),str1(5),str1(6)]);%��
+
+imgR=Img(:,:,1);
+imgG=Img(:,:,2);
+imgB=Img(:,:,3);
+% ��Ϣ��ȡ
+%ֻ��֪��ͼƬԭ������״��������ȡ��������ˮӡ��
+
+%׼������
+wcyuan=zeros(1,8);
+wcyin=zeros(1,8);
+imgtiquR=zeros(mhide,nhide);
+imgtiquG=zeros(mhide,nhide);
+imgtiquB=zeros(mhide,nhide);
+%R
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgR(i,j));
+        %����λת��
+        wcyin(1)=wcyuan(5);wcyin(2)=wcyuan(6);wcyin(3)=wcyuan(7);wcyin(4)=wcyuan(8);
+        %��0
+        wcyin(5)=1;wcyin(6)=1;wcyin(7)=1;wcyin(8)=1;
+        imgtiquR(i,j)=bin2dec_z(wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8));
+    end
+end
+
+%G
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgG(i,j));
+        %����λת��
+        wcyin(1)=wcyuan(5);wcyin(2)=wcyuan(6);wcyin(3)=wcyuan(7);wcyin(4)=wcyuan(8);
+        %��0
+        wcyin(5)=1;wcyin(6)=1;wcyin(7)=1;wcyin(8)=1;
+        imgtiquG(i,j)=bin2dec_z(wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8));
+    end
+end
+
+%B
+for i=1:mhide
+    for j=1:nhide
+        [wcyuan(1),wcyuan(2),wcyuan(3),wcyuan(4),wcyuan(5),wcyuan(6),wcyuan(7),wcyuan(8)]=dec2bin_z(imgB(i,j));
+        %����λת��
+        wcyin(1)=wcyuan(5);wcyin(2)=wcyuan(6);wcyin(3)=wcyuan(7);wcyin(4)=wcyuan(8);
+        %��0
+        wcyin(5)=1;wcyin(6)=1;wcyin(7)=1;wcyin(8)=1;
+        imgtiquB(i,j)=bin2dec_z(wcyin(1),wcyin(2),wcyin(3),wcyin(4),wcyin(5),wcyin(6),wcyin(7),wcyin(8));
+    end
+end
+
+%��ȡ��ϣ���ʼ����
+tiqu=zeros(mhide,nhide,3);
+tiqu(:,:,1)=imgtiquR;
+tiqu(:,:,2)=imgtiquG;
+tiqu(:,:,3)=imgtiquB;
+axis off;
+axes(handles.axes5);
+imshow(uint8(tiqu));
+set(handles.jiema1,'userdata',tiqu);
+h3=warndlg('�������','������ʾ')
+
+function qianru2_Callback(hObject, eventdata, handles)
+axis off;
+img=get(findobj('tag','pushbutton1'),'userdata');
+imhide=get(findobj('tag','pushbutton2'),'userdata');
+[m,n,h]=size(img);
+[mhide,nhide]=size(imhide);
+imgR=img(:,:,1);
+imgG=img(:,:,2);
+imgB=img(:,:,3);
+imgRline=imgR(:);
+imgGline=imgG(:);
+imgBline=imgB(:);
+imhideline=imhide(:);
+yr=4;
+yg=5;
+yb=3;
+y=zeros(1,8);
+
+imhidelinebin=zeros(mhide*nhide*8,1);
+for ii=1:mhide*nhide
+    [imhidelinebin(ii*8),imhidelinebin(ii*8-1),imhidelinebin(ii*8-2),imhidelinebin(ii*8-3),...
+     imhidelinebin(ii*8-4),imhidelinebin(ii*8-5),imhidelinebin(ii*8-6),imhidelinebin(ii*8-7)]...
+     =dec2bin_z(imhideline(ii));
+end
+
+%��ʼǶ��
+flag=0;
+embedSum=0;
+%B
+imgBlineNew=imgBline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgBline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));%��һ������0��λ��
+embedNum=fn-yb;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+         end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgBlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+%R
+%flag=0;
+imgRlineNew=imgRline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgRline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+embedNum=fn-yr;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+          end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgRlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+%G
+%flag=0;
+imgGlineNew=imgGline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgGline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+embedNum=fn-yg;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+          end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgGlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+
+%Ƕ����ɣ���ʼ����
+imgNew=zeros(m,n,h);
+imgR2=reshape(imgRlineNew,[m,n]);
+imgG2=reshape(imgGlineNew,[m,n]);
+imgB2=reshape(imgBlineNew,[m,n]);
+imgNew(:,:,1)=imgR2;
+imgNew(:,:,2)=imgG2;
+imgNew(:,:,3)=imgB2;
+axes(handles.axes4);
+imshow(uint8(imgNew));
+set(handles.qianru2,'userdata',imgNew);
+h3=warndlg('�������','������ʾ')
+function baocun2_Callback(hObject, eventdata, handles)
+imgNew=get(findobj('tag','qianru2'),'userdata');
+[filename,filepath]=uiputfile({'*.bmp'},'�����ļ�');
+str=[filepath,filename];
+imwrite(uint8(imgNew),str);
+function jiema2_Callback(hObject, eventdata, handles)
+[filename filepath]=uigetfile({'*.bmp';'*.*'},'������ͼƬ');
+str=[filepath filename];
+Img=imread(str);
+[m,n,h]=size(Img);
+%ֻ��֪��ͼƬԭ������״��������ȡ��������ˮӡ,
+%��Կ����ˮӡͼ��ĸߺͿ��������346����350����Կ����346350��
+str1=get(findobj('tag','edit1'),'userdata');
+key=str1
+
+mhide=str2double([str1(1),str1(2),str1(3)]);%��
+nhide=str2double([str1(4),str1(5),str1(6)]);%��
+%***************************************************
+%�ж��ܲ���װ�����ɫͼ��������ԵĻ���Ҫ�������ռ�
+judge=0;
+if(m*n>mhide*nhide*3)
+    judge=1;
+end
+if(judge==1)
+    nhide=nhide*3;
+end
+%***************************************************
+%׼������
+yr=4;
+yg=5;
+yb=3;
+ImgR=Img(:,:,1);
+ImgG=Img(:,:,2);
+ImgB=Img(:,:,3);
+ImgRline=ImgR(:);
+ImgGline=ImgG(:);
+ImgBline=ImgB(:);
+
+% ��Ϣ��ȡ
+Imhidelinebin=zeros(8*mhide*nhide,1);
+%׼������
+y=zeros(8,1);
+
+%B
+flag=0;
+extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgBline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yb;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1;
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+
+%R
+%flag=0;      
+%extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgRline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yr;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1;
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+
+%G
+%flag=0;      
+%extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgGline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yg;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1; 
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+%awc=embedNum
+%awb=extractSum
+%��ȡ��ϣ���ʼ����
+Imhideline=zeros(mhide*nhide,1);
+for ii=1:mhide*nhide
+   Imhideline(ii)=bin2dec_z(Imhidelinebin(ii*8),Imhidelinebin(ii*8-1),Imhidelinebin(ii*8-2),Imhidelinebin(ii*8-3),...
+        Imhidelinebin(ii*8-4),Imhidelinebin(ii*8-5),Imhidelinebin(ii*8-6),Imhidelinebin(ii*8-7));
+end
+%***********************************************
+%�ж��Ƿ����װ�²�ɫͼ��
+if(judge==1)
+    Imhide=reshape(Imhideline,[mhide,nhide/3,3]);
+end
+if(judge==0)
+    Imhide=reshape(Imhideline,[mhide,nhide]);
+end
+%***********************************************
+axis off;
+axes(handles.axes5);
+imshow(uint8(Imhide));
+set(handles.jiema2,'userdata',Imhide);
+h3=warndlg('�������','������ʾ')
+
+function qianru3_Callback(hObject, eventdata, handles)
+axis off;
+img=get(findobj('tag','pushbutton1'),'userdata');
+imhide=get(findobj('tag','pushbutton2'),'userdata');
+%�ж�ά��
+imghide_size=size(imhide);
+dimension=numel(imghide_size);
+
+[m,n,h]=size(img);
+[mhide,nhide]=size(imhide);
+%��ȡ������Կ
+cipher_m=mhide;
+if(dimension==3)
+    cipher_n=nhide/3;
+end
+if(dimension==2)
+    cipher_n=nhide;
+end
+%����������Կ
+change=zeros(8,1);
+cipher=cipher_m+cipher_n;
+cipher=mod(cipher,255);
+[change(1),change(2),change(3),change(4),change(5),change(6),change(7),change(8)]=dec2bin_z(cipher);
+
+%׼������
+imgR=img(:,:,1);
+imgG=img(:,:,2);
+imgB=img(:,:,3);
+imgRline=imgR(:);
+imgGline=imgG(:);
+imgBline=imgB(:);
+imhideline=imhide(:);
+yr=4;
+yg=5;
+yb=3;
+y=zeros(1,8);
+
+imhidelinebin=zeros(mhide*nhide*8,1);
+for ii=1:mhide*nhide
+    [imhidelinebin(ii*8),imhidelinebin(ii*8-1),imhidelinebin(ii*8-2),imhidelinebin(ii*8-3),...
+     imhidelinebin(ii*8-4),imhidelinebin(ii*8-5),imhidelinebin(ii*8-6),imhidelinebin(ii*8-7)]...
+     =dec2bin_z(imhideline(ii));
+    %������
+    imhidelinebin(ii*8)=xor(imhidelinebin(ii*8),change(1));
+    imhidelinebin(ii*8-1)=xor(imhidelinebin(ii*8-1),change(2));
+    imhidelinebin(ii*8-2)=xor(imhidelinebin(ii*8-2),change(3));
+    imhidelinebin(ii*8-3)=xor(imhidelinebin(ii*8-3),change(4));
+    imhidelinebin(ii*8-4)=xor(imhidelinebin(ii*8-4),change(5));
+    imhidelinebin(ii*8-5)=xor(imhidelinebin(ii*8-5),change(6));
+    imhidelinebin(ii*8-6)=xor(imhidelinebin(ii*8-6),change(7));
+    imhidelinebin(ii*8-7)=xor(imhidelinebin(ii*8-7),change(8));
+end
+
+%��ʼǶ��
+flag=0;
+embedSum=0;
+%B
+imgBlineNew=imgBline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgBline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));%��һ������0��λ��
+embedNum=fn-yb;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+         end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgBlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+%R
+%flag=0;
+imgRlineNew=imgRline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgRline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+embedNum=fn-yr;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+          end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgRlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+%G
+%flag=0;
+imgGlineNew=imgGline;
+for ii=1:m*n
+    if(flag==1)
+        break;
+    end
+
+[y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgGline(ii));
+fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+embedNum=fn-yg;
+   if embedNum>0
+     for jj=1:embedNum
+         embedSum=embedSum+1;
+         if embedSum>mhide*nhide*8
+             flag=1;
+             break;
+          end
+        y(jj)=imhidelinebin(embedSum);
+     end
+     imgGlineNew(ii)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   end
+end
+
+
+%Ƕ����ɣ���ʼ����
+imgNew=zeros(m,n,h);
+imgR2=reshape(imgRlineNew,[m,n]);
+imgG2=reshape(imgGlineNew,[m,n]);
+imgB2=reshape(imgBlineNew,[m,n]);
+imgNew(:,:,1)=imgR2;
+imgNew(:,:,2)=imgG2;
+imgNew(:,:,3)=imgB2;
+axes(handles.axes4);
+imshow(uint8(imgNew));
+set(handles.qianru3,'userdata',imgNew);
+h3=warndlg('�������','������ʾ')
+function baocun3_Callback(hObject, eventdata, handles)
+imgNew=get(findobj('tag','qianru3'),'userdata');
+[filename,filepath]=uiputfile({'*.bmp'},'�����ļ�');
+str=[filepath,filename];
+imwrite(uint8(imgNew),str);
+function jiema3_Callback(hObject, eventdata, handles)
+[filename filepath]=uigetfile({'*.bmp';'*.*'},'������ͼƬ');
+str=[filepath filename];
+Img=imread(str);
+[m,n,h]=size(Img);
+%ֻ��֪��ͼƬԭ������״��������ȡ��������ˮӡ,
+%��Կ����ˮӡͼ��ĸߺͿ��������346����350����Կ����346350��
+str1=get(findobj('tag','edit1'),'userdata');
+key=str1
+
+mhide=str2double([str1(1),str1(2),str1(3)]);%��
+nhide=str2double([str1(4),str1(5),str1(6)]);%��
+%����������Կ
+change=zeros(8,1);
+cipher=mhide+nhide;
+cipher=mod(cipher,255);
+[change(1),change(2),change(3),change(4),change(5),change(6),change(7),change(8)]=dec2bin_z(cipher);
+%***************************************************
+%�ж��ܲ���װ�����ɫͼ��������ԵĻ���Ҫ�������ռ�
+judge=0;
+if(m*n>mhide*nhide*3)
+    judge=1;
+end
+if(judge==1)
+    nhide=nhide*3;
+end
+%***************************************************
+%׼������
+yr=4;
+yg=5;
+yb=3;
+ImgR=Img(:,:,1);
+ImgG=Img(:,:,2);
+ImgB=Img(:,:,3);
+ImgRline=ImgR(:);
+ImgGline=ImgG(:);
+ImgBline=ImgB(:);
+
+% ��Ϣ��ȡ
+Imhidelinebin=zeros(8*mhide*nhide,1);
+%׼������
+y=zeros(8,1);
+
+%B
+flag=0;
+extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgBline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yb;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1;
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+
+%R
+%flag=0;      
+%extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgRline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yr;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1;
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+
+%G
+%flag=0;      
+%extractSum=0;
+for ii=1:m*n
+    if flag==1
+        break;
+    end
+   [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgGline(ii));
+   fn=firstNzreo(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+   embedNum=fn-yg;
+   if embedNum>0
+       for jj=1:embedNum
+          extractSum=extractSum+1; 
+          if extractSum>8*mhide*nhide
+           flag=1;
+           break;
+          end
+          Imhidelinebin(extractSum)=y(jj);
+       end
+   end
+end
+
+%awc=embedNum
+%awb=extractSum
+%��ȡ��ϣ���ʼ����
+Imhideline=zeros(mhide*nhide,1);
+for ii=1:mhide*nhide
+    %������
+    Imhidelinebin(ii*8)=xor(Imhidelinebin(ii*8),change(1));
+    Imhidelinebin(ii*8-1)=xor(Imhidelinebin(ii*8-1),change(2));
+    Imhidelinebin(ii*8-2)=xor(Imhidelinebin(ii*8-2),change(3));
+    Imhidelinebin(ii*8-3)=xor(Imhidelinebin(ii*8-3),change(4));
+    Imhidelinebin(ii*8-4)=xor(Imhidelinebin(ii*8-4),change(5));
+    Imhidelinebin(ii*8-5)=xor(Imhidelinebin(ii*8-5),change(6));
+    Imhidelinebin(ii*8-6)=xor(Imhidelinebin(ii*8-6),change(7));
+    Imhidelinebin(ii*8-7)=xor(Imhidelinebin(ii*8-7),change(8));
+    %����ת��
+    Imhideline(ii)=bin2dec_z(Imhidelinebin(ii*8),Imhidelinebin(ii*8-1),Imhidelinebin(ii*8-2),Imhidelinebin(ii*8-3),...
+        Imhidelinebin(ii*8-4),Imhidelinebin(ii*8-5),Imhidelinebin(ii*8-6),Imhidelinebin(ii*8-7));
+    
+end
+%***********************************************
+%�ж��Ƿ����װ�²�ɫͼ��
+if(judge==1)
+    Imhide=reshape(Imhideline,[mhide,nhide/3,3]);
+end
+if(judge==0)
+    Imhide=reshape(Imhideline,[mhide,nhide]);
+end
+%***********************************************
+axis off;
+axes(handles.axes5);
+imshow(uint8(Imhide));
+set(handles.jiema3,'userdata',Imhide);
+h3=warndlg('�������','������ʾ')
+
+function qianru4_Callback(hObject, eventdata, handles)
+axis off;
+img=get(findobj('tag','pushbutton1'),'userdata');
+imhide=get(findobj('tag','pushbutton2'),'userdata');
+
+[m,n,h]=size(img);
+[mhide,nhide]=size(imhide);
+zm=img;
+%׼������
+imgR=img(:,:,1);
+imgG=img(:,:,2);
+imgB=img(:,:,3);
+imhideline=imhide(:);
+%��������ͼ��
+zm_book=zeros(16,1);%zm_book�����¼�ˣ���i���¼�˶�������ɫ
+%����ɫ��ȡ
+for i=1:m
+    for j=1:n
+        for k=1:16
+            if(zm(i,j)<16*k)%����������ɫ�ķ�����
+                zm_book(k)=zm_book(k)+1;%��k������+1
+                %zm_hide(i,j)�ṹ�������¼�˵�i����ɫ�ĵ�j������ɫ������λ��
+                zm_hide(k,zm_book(k)).x=i;
+                zm_hide(k,zm_book(k)).y=j;
+                break;
+            end
+        end
+    end
+end
+%��������ͼ��
+imhidelinebin=zeros(mhide*nhide*8,1);
+for ii=1:mhide*nhide
+    [imhidelinebin(ii*8),imhidelinebin(ii*8-1),imhidelinebin(ii*8-2),imhidelinebin(ii*8-3),...
+     imhidelinebin(ii*8-4),imhidelinebin(ii*8-5),imhidelinebin(ii*8-6),imhidelinebin(ii*8-7)]...
+     =dec2bin_z(imhideline(ii));
+end
+
+%��ʼǶ��
+flag=0;
+embedSum=0;
+y=zeros(8,1);
+%R
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgR(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            embedSum=embedSum+1;
+            if embedSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            y(k)=imhidelinebin(embedSum); 
+        end
+        imgR(zm_hide(i,j).x,zm_hide(i,j).y)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+    end
+end
+%G
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgG(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            embedSum=embedSum+1;
+            if embedSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            y(k)=imhidelinebin(embedSum);
+        end
+        imgG(zm_hide(i,j).x,zm_hide(i,j).y)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+    end
+end
+%B
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(imgB(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            embedSum=embedSum+1;
+            if embedSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            y(k)=imhidelinebin(embedSum);
+        end
+        imgB(zm_hide(i,j).x,zm_hide(i,j).y)=bin2dec_z(y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1));
+    end
+end
+
+%Ƕ����ɣ���ʼ����
+imgNew=zeros(m,n,h);
+imgNew(:,:,1)=imgR;
+imgNew(:,:,2)=imgG;
+imgNew(:,:,3)=imgB;
+axes(handles.axes4);
+imshow(uint8(imgNew));
+set(handles.qianru4,'userdata',imgNew);
+h3=warndlg('�������','������ʾ')
+function baocun4_Callback(hObject, eventdata, handles)
+imgNew=get(findobj('tag','qianru4'),'userdata');
+[filename,filepath]=uiputfile({'*.bmp'},'�����ļ�');
+str=[filepath,filename];
+imwrite(uint8(imgNew),str);
+function jiema4_Callback(hObject, eventdata, handles)
+[filename filepath]=uigetfile({'*.bmp';'*.*'},'������ͼƬ');
+str=[filepath filename];
+Img=imread(str);
+[m,n,h]=size(Img);
+%ֻ��֪��ͼƬԭ������״��������ȡ��������ˮӡ,
+%��Կ����ˮӡͼ��ĸߺͿ��������346����350����Կ����346350��
+str1=get(findobj('tag','edit1'),'userdata');
+key=str1
+
+mhide=str2double([str1(1),str1(2),str1(3)]);%��
+nhide=str2double([str1(4),str1(5),str1(6)]);%��
+%***************************************************
+%�ж��ܲ���װ�����ɫͼ��������ԵĻ���Ҫ�������ռ�
+judge=0;
+if(m*n>mhide*nhide*3)
+    judge=1;
+end
+if(judge==1)
+    nhide=nhide*3;
+end
+%***************************************************
+%��ȡ��ɫ������Ϣ
+
+%��������ͼ��
+zm=Img;
+zm_book=zeros(16,1);%zm_book�����¼�ˣ���i���¼�˶�������ɫ
+%����ɫ��ȡ����ͼ�����Ϣ
+for i=1:m
+    for j=1:n
+        for k=1:16
+            if(zm(i,j)<16*k)%����������ɫ�ķ�����
+                zm_book(k)=zm_book(k)+1;%��k������+1
+                %zm_hide(i,j)�ṹ�������¼�˵�i����ɫ�ĵ�j������ɫ������λ��
+                zm_hide(k,zm_book(k)).x=i;
+                zm_hide(k,zm_book(k)).y=j;
+                break;
+            end
+        end
+    end
+end
+
+
+%׼������
+ImgR=Img(:,:,1);
+ImgG=Img(:,:,2);
+ImgB=Img(:,:,3);
+y=zeros(8,1);
+Imhidelinebin=zeros(8*mhide*nhide,1);
+%R
+flag=0;
+extractSum=0;
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgR(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            extractSum=extractSum+1;
+            if extractSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            Imhidelinebin(extractSum)=y(k);
+        end
+    end
+end
+%G
+%flag=0;
+%extractSum=0;
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgG(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            extractSum=extractSum+1;
+            if extractSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            Imhidelinebin(extractSum)=y(k);
+        end
+    end
+end
+%B
+%flag=0;
+%extractSum=0;
+for i=1:16
+    if(flag==1)
+        break;
+    end
+    wc=zm_book(i);
+    for j=1:wc
+        [y(8),y(7),y(6),y(5),y(4),y(3),y(2),y(1)]=dec2bin_z(ImgB(zm_hide(i,j).x,zm_hide(i,j).y));
+        for k=1:4
+            extractSum=extractSum+1;
+            if extractSum>mhide*nhide*8
+                flag=1;
+                break;
+            end
+            Imhidelinebin(extractSum)=y(k);
+        end
+    end
+end
+
+
+%awc=embedNum
+%awb=extractSum
+%��ȡ��ϣ���ʼ����
+Imhideline=zeros(mhide*nhide,1);
+for ii=1:mhide*nhide
+    %����ת��
+    Imhideline(ii)=bin2dec_z(Imhidelinebin(ii*8),Imhidelinebin(ii*8-1),Imhidelinebin(ii*8-2),Imhidelinebin(ii*8-3),...
+        Imhidelinebin(ii*8-4),Imhidelinebin(ii*8-5),Imhidelinebin(ii*8-6),Imhidelinebin(ii*8-7));
+    
+end
+%***********************************************
+%�ж��Ƿ����װ�²�ɫͼ��
+if(judge==1)
+    Imhide=reshape(Imhideline,[mhide,nhide/3,3]);
+end
+if(judge==0)
+    Imhide=reshape(Imhideline,[mhide,nhide]);
+end
+%***********************************************
+axis off;
+axes(handles.axes5);
+imshow(uint8(Imhide));
+set(handles.jiema4,'userdata',Imhide);
+h3=warndlg('�������','������ʾ')
+
+function zongbaocun_Callback(hObject, eventdata, handles)
+imgNew=get(findobj('tag','jiema1'),'userdata');
+if isempty(imgNew)
+    imgNew=get(findobj('tag','jiema2'),'userdata');
+        if isempty(imgNew)
+            imgNew=get(findobj('tag','jiema3'),'userdata');
+                if isempty(imgNew)
+                    imgNew=get(findobj('tag','jiema4'),'userdata');
+                end
+        end
+end
+[filename,filepath]=uiputfile({'*.bmp'},'�����ļ�');
+str=[filepath,filename];
+imwrite(uint8(imgNew),str);

补充资料-20261023/多媒体大作业/王晨_2220171938/实验源码/bin2dec_z.m

@@ -0,0 +1,5 @@
+%function bin2dec_z   
+%������תʮ����
+function dec=bin2dec_z(y8,y7,y6,y5,y4,y3,y2,y1)
+ dec=y1+2*y2+4*y3+8*y4+16*y5+32*y6+64*y7+128*y8;
+end

补充资料-20261023/多媒体大作业/王晨_2220171938/实验源码/dec2bin_z.m

@@ -0,0 +1,12 @@
+%function dec2bin_z
+%ʮ����ת������
+function [y8,y7,y6,y5,y4,y3,y2,y1]=dec2bin_z(dec)
+y1=mod(dec,2); dec=(dec-y1)/2;
+y2=mod(dec,2); dec=(dec-y2)/2;
+y3=mod(dec,2); dec=(dec-y3)/2;
+y4=mod(dec,2); dec=(dec-y4)/2;
+y5=mod(dec,2); dec=(dec-y5)/2;
+y6=mod(dec,2); dec=(dec-y6)/2;
+y7=mod(dec,2); dec=(dec-y7)/2;
+y8=mod(dec,2); 
+end

补充资料-20261023/多媒体大作业/王晨_2220171938/实验源码/firstNzreo.m

@@ -0,0 +1,13 @@
+%function firstNzreo
+%��һ���������λ��
+function po=firstNzreo(y8,y7,y6,y5,y4,y3,y2,y1)
+if            y8~=0  po=8;
+elseif       y7~=0  po=7; 
+elseif       y6~=0  po=6;
+elseif       y5~=0  po=5;
+elseif       y4~=0  po=4;
+elseif       y3~=0  po=3;
+elseif       y2~=0  po=2;
+else         po=1;
+    
+end

补充资料-20261023/第一章/2DAnimation.swf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2150ef0593c023a9e44596321cb4fb830551c2472a359fb972f108bca1b5aacf
+size 10697

补充资料-20261023/第一章/3DAnimation.avi

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:93c3f33f3d8adbed1add81d7e24ec135d667dc55cd4a3ad7a91c27753ec2b504
+size 2984170

补充资料-20261023/第一章/Atlas - 谷歌下一代行走机器人_标清.flv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:402e58eb3f3ca2c1becb1ae23e32cd66d2d48e64d4a50b6abe1e010cdbadd534
+size 8374704

补充资料-20261023/第一章/Boston Dynamics.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0180d6e5db08b207d7804c9dba860797c39039dc039afdac68d650a51cbf983e
+size 2814206

补充资料-20261023/第一章/video.wmv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:db413b8dbbc52137734f21ac2069395dc9ec9a7d9749126dddafcc261ccb978e
+size 4637768

补充资料-20261023/第一章/动画编辑.swf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2580bf27f57a48b468f3a7faab191949f62b1a79b52808942b7774adad4c3a89
+size 221304

补充资料-20261023/第一章/图形和图像编辑.swf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:57ff97419872d53e68046b85363de5c29d067a993cd0e3341f404b968d774c4a
+size 187580

补充资料-20261023/第一章/数字音频处理.swf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:76cab52fd2791edbee7be4c780ba6c22b29683539f4284e9333fb9d1cde9fb6c
+size 251497

补充资料-20261023/第一章/物联网未来的高科技生活（流畅）_标清.flv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f2c3aef9f238c9a068e53c94de74724953f3ec0de314645bbdfd2a1e4fe83267
+size 11903031

补充资料-20261023/第一章/第一章.ppt

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e682bdca93ef2a70f720cd62c57e96e7da9a51db0d20827781101f7f622f3c81
+size 19040256

补充资料-20261023/第一章/视频编辑.swf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f6fc5250472af546559187585f04a84a65481072eb2ff2c1a1c684ccbfe66f73
+size 218155

补充资料-20261023/第七章/clips/100K.wmv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:464900d2fe810065289ed8b90be96f02cb112b725457d476194fb3c45d53b4bd
+size 166447

补充资料-20261023/第七章/clips/28K.wmv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f2b1374e21a8bee3d0818042e65a25fb74da3855e0a95028d79524cb7d05ff4d
+size 81155

补充资料-20261023/第七章/clips/350K.wmv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a3bb412147f4682a452c948fbe70023793a44d8940fb5c47887091f0965fdead
+size 487958

补充资料-20261023/第七章/clips/56k.wmv

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46c070e266545d8c4cd26f9586752fd7694568b6741fd1795d8c2b913253c695
+size 81155