removing unwanted pixels
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I have an image
in which i need only the text ,i want to remove extra whitr regions around the text.please help
6 个评论
Walter Roberson
2012-4-25
*Everything* is text in *some* writing system.
Jan
2012-4-25
Manually or automatically? Is the picture printed on paper, in a graphics file or imported to Matlab already? Does the problem concern this picture only or do you have a set of pictures? How much noise is allowed in the pictures? Please, kash, post all relevant details.
kash
2012-4-25
kash
2012-4-25
Sean de Wolski
2012-4-25
How can you tell whether it's German/French/Spanish/English by looking at the text alone?
For example: whiskey
Jan
2012-5-22
@Sean: A partial solution of your problem: "whiskey" is not German.
采纳的回答
Andrei Bobrov
2012-4-25
Im = imread('Q8.png');
BW = im2bw(Im,graythresh(Im));
bw1 = imdilate(BW,[0 0 0 0 1 1 1 1]);
s = regionprops(bw1,'Area');
k = sort([s.Area],'descend');
bw2 = bwareaopen(bw1, k(2)-1);
bw3 = imfill(bw2,'holes');
bwOut = bw3 & BW;
imshow(bwOut)
更多回答（2 个）
Teja Muppirala
2012-4-25
Maybe IMFILL might work?
A = [1 1 1 1; 1 0 1 0; 1 1 1 0]
imfill(A)
imfill(A) - A
Stephen
2012-5-22
load the image and make it so black==0 and white==1, then...
Words = imclearborder(~IMG)
if you want to crop it, you can try
Words(sum(Words,2)==0,:)=[];
Words(:,sum(Words)==0)=[];
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