how to show information of image in gui

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sirapob gotiram
sirapob gotiram 2018-11-18
评论： Image Analyst 2018-11-18
46446016_276594562999835_6605261338736328704_n.png
How to get pixel info show in text box (red,green,blue)
please help
  2 个评论
Rik
Rik 2018-11-18
You can use the lines below to set the motion callback function and to get the current location.
set(parentfig,'WindowButtonMotionFcn',@MotionCallback)
get(gcf,'CurrentPoint')
With those two lines, you should be able to solve this.
Image Analyst
Image Analyst 2018-11-18
Rik, please move down to the answers section.

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回答（1 个）

shariq khan
shariq khan 2018-11-18
RGB is format of 3 layers of an Image for example when you load an image - the intensity closer to Red is 1st plane, intensity closer to Green is 2nd and close to Blue is 3rd. So when you want to know specifically the information of Red green blue, it comes in Matrix format depending upon the size of your image
check here for little more insight
  2 个评论
shariq khan
shariq khan 2018-11-18
for number of pixels - I think you should check the area of your image display and quality of it and divide - if you remember al devices has some dpi which is calculated based on screen size and camera (photo) quality
if your question would mean this also?
Image Analyst
Image Analyst 2018-11-18
This will not save/record the RGB and xy values "live" as the user mouses around over the image.

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