Why is my image not being inverted?
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So I am trying to process a RGB image, by converting it first to Greyscale and then carrying out further processing.
Here is my piece of code:
I=imread('E:\SAHIL\RW\matlab basics\image processing\soil analysis\images to process\1.jpg'); I=rgb2gray(I); background=imopen(I,strel('disk',15)); surf(double(background(1:8:end,1:8:end))),zlim([0,255]); set(gca,'ydir','reverse'); I2=I-background; imshow(I2) I3 = imadjust(I2); imshow(I3);
my surfing is completely black plus the entire image turns out to be black when inverted whereas I have three elements in my image and my background is white. When the same thing is done with respect to rice.png which is a by default image present in matlab toolbox, all the results come completely accurate.
I want to know where am I going wrong and why my output occurs as completely unexpected.
![](/matlabcentral/answers/uploaded_files/96307/1.jpg)
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