| function [imgCrop, mask, X, Y] = LMobjectcrop(img, annotation, j, b) | |
| % | |
| % Crop object from image | |
| % | |
| % imgCrop = LMobjectcrop(annotation, j) | |
| % | |
| % also returns the segmentation mask | |
| if nargin == 3 | |
| b = 2; | |
| end | |
| [nrows ncols cc] = size(img); | |
| [X,Y] = getLMpolygon(annotation.object(j).polygon); | |
| crop(1) = max(min(X)-b,1); | |
| crop(2) = min(max(X)+b,ncols); | |
| crop(3) = max(min(Y)-b,1); | |
| crop(4) = min(max(Y)+b,nrows); | |
| crop = round(crop); | |
| % Image crop: | |
| imgCrop = img(crop(3):crop(4), crop(1):crop(2), :); | |
| % Segmentation mask | |
| if nargout > 1 | |
| X = X-crop(1); | |
| Y = Y-crop(3); | |
| [x,y] = meshgrid(1:size(imgCrop,2),1:size(imgCrop,1)); | |
| mask = logical(inpolygon(x, y, X, Y)); | |
| end | |