how do i divide an image into blocks?
조회 수: 4 (최근 30일)
이전 댓글 표시
I have this image (2848 x 4288) and i want to divide it into 9 blocks and perform some operations on individual or each block. For example i perform this operations on an image:;
y = rgb2gray(imresize(imread('DSC_0009.jpg'),.2));
z = 255.0 - 1.0 * double(y);
z = z ./5 ;
z2 = imfilter(z, fspecial('average', 15));
z2(z2 > 35) = 35;
z2(z2 < 30) = 0;
surface(z2);
shading interp;
axis ij;
axis tight;
I want to do a similar operation on each of the blocks and output it as well.
thank you.
답변 (2개)
Image Analyst
2015년 8월 16일
See the FAQ for code to perform it two different ways, normal indexing, and the cell2mat() function: http://matlab.wikia.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F
댓글 수: 0
Image Analyst
2015년 8월 16일
You can also use blockproc() if you don't need to store the subimages but just need to perform some operation on them and give you an output image. See attached demos for a variety of ways to use blockproc().
댓글 수: 5
Image Analyst
2015년 8월 19일
I don't know. I've never used blender. However using fwrite() or fprintf() you can create any file you want.
Walter Roberson
2015년 8월 19일
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!