Update pages/7_Unstructured_data.py

pages/7_Unstructured_data.py

@@ -533,9 +533,33 @@ if file_type == "IMAGE":
             $$
             I(x,y) \cdot Scaling matrix = I'(x',y') 
             $$
+        - **Scaling matrix:**
+        - [Sx 0 Tx
         
+           0 Sy Ty]
+        - Sx is how much we can scale on x-axis
+        - Sy is how much we can scale on y-axis
+        - Formula:
+            $$
+            x' = x + shearX \cdot y \\
+            y' = y + shearY \cdot x
+            $$
+        ''')
+        st.code('''
+        import cv2
+        ## creation of scaling matrix
+        sx = 0.3
+        sy = 0.3
+        tx = 0
+        ty = 0
+        sc_m = np.array([[sx,0,tx],[0,sy,ty]],dtype=np.float32)
+        ## save and display the image
+        scale_img = cv2.warpAffine(img,sc_m,(2560,1600))
+        cv2.imshow("org_img",img)
+        cv2.imshow("scaled_img",scale_img)
+        cv2.waitKey()
+        cv2.destroyAllWindows()
         ''')
-