Cropping, segmenting and recombining images

I want to crop an image two to three times, segment each image separately and then recombine them in the manner of the original image.

How can I accomplish this?

Answer 1

[Walter Roberson]

blockproc() ?

[Caleb]

I have an image that won't segment a couple of blobs properly because of the background illumination. I want to cut the image in to two pieces and segment the two pieces separately. Then, after I'm satisfied with the segmentation, I want to recombine the images so that we end up with a binary in the form of the original image.

[Image Analyst]

Probably not necessary unless you have a really unusual image - where did you upload it?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

[Walter Roberson]

If the sectioning can be done by cutting directly across the image, perpendicular to a side, then you can use blockproc(). If, however, the cut is ragged or angled or is a corner, then you will need other techniques

[Caleb]

http://dl.dropbox.com/u/67332208/SampleB_15degrees_005.tif

Now it really doesn't look necessary to try what I'm wanting to do, but the bottom half segments nearly perfectly while the top half does not.

[Walter Roberson]

Somehow I don't think cutting that image is likely to improve segmentation of the top half.

[Caleb]

Well it's so noisy that I don't see background division being too helpful.

I also don't see how blockproc() does what I'm trying to do.