removing unwanted pixels

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kash
kash 2012-4-25
I have an image
http://imgur.com/1AyaA
in which i need only the text ,i want to remove extra whitr regions around the text.please help
  6 个评论
显示 4更早的评论
Sean de Wolski
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
Jan 2012-5-22
@Sean: A partial solution of your problem: "whiskey" is not German.

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采纳的回答

Andrei Bobrov
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
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
  2 个评论
kash
kash 2012-4-25
Teja i need automatic removing
Sean de Wolski
Sean de Wolski 2012-4-25
@kash, what 's not automagical about that?

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Stephen
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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