>> im = imread('pic.jpg');
>> figure, imshow(im)
>> imgray = rgb2gray(im);
>> figure, imshow(imgray)
>> impixelinfo
>> imhisto = histeq(imgray);
>> figure, imshow(imhisto)
>> imedge = edge(imgray,'canny');
>> figure, imshow(imedge)
>> se = strel('line',10,5);
>> bw2 = imdilate(imedge,se);
>> figure, imshow(bw2), title('Dilated')
>> BW5 = imfill(bw2,'holes');
>> figure, imshow(BW5), title('Filled')
>> se = strel('disk',8,8);
>> bw2 = imerode(BW5,se);
>> figure, imshow(bw2), title('Erode')