MATLAB: How to compute number of pixels in images

duplicate posthomeworkImage Processing Toolboxpixel count

Dear sir I have one ground truth image(image 1) and other segmented image(image 2). I want to compute the number of pixel for white area for image 1 and number of pixel for red area in image 2. and then want to compute the difference of pixels.

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Because a different person asked this very same question with the very same image, and Walter answered it here I'm thinking it's homework. I've tagged it as such.

http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

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MATLAB: How can I seperate magnitude and phase from an image using 2d dft?(fft2)

Do the same for considering two images and show mag1+phase1 and so on, here I have shown how you calculate the mag and phase for one image

fft_result=fft2(im);                         
mag=abs(fft_result);                           
phase=angle(fft_result);

MATLAB: For each pixel in C, go to G and extract the whole component in G corresponding to pixels in C.below we attached C and G Images

Description

IM = imreconstruct(marker,mask) performs morphological reconstruction of the image marker under the image mask. marker and mask can be two intensity images or two binary images with the same size. The returned image IM is an intensity image or a binary image, depending on the input images, and is the same size as the input images.

So for you

outputImage = imreconstruct(C, G);

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Related Solutions

MATLAB: How can I seperate magnitude and phase from an image using 2d dft?(fft2)

MATLAB: For each pixel in C, go to G and extract the whole component in G corresponding to pixels in C.below we attached C and G Images

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