processing image detect color and shape object

2020 4 4
1 个回答
更新时间：2020 4 13
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hi guy
how can i detect color object in image (red green blue) in hsv space and write color name in object. thankyou

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回答（1 个）

Image Analyst
Image Analyst 2020-4-4

1 个投票

See demos in my File Exchange.

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ngo tung
ngo tung 2020-4-4
What function can I use to cut an object out of the image after defining the bounding box? Thankyou very much.
Image Analyst
Image Analyst 2020-4-5
imcrop():
croppedImage = imcrop(rgbImage, [xLeftColumn, yTopRow, widthInColumns, heightInRows]);
ngo tung
ngo tung 2020-4-5
thank sir.
Can you help me answer the last question?
what function can i filter out pixels color that have values ​​within my selection, same as the inRange() function in Opencv.
Thanks for the help!!
ngo tung
ngo tung 2020-4-13
@Image Analyst
Can you answer this question.
Image Analyst
Image Analyst 2020-4-13
Get a mask with true or false that says where your pixels are or are not. Then you can mask them out (blacken them):
% Mask the image using bsxfun() function to multiply the mask by each channel individually. Works for gray scale as well as RGB Color images.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));
Also, try the Color Thresholder app on the Apps tab of the tool ribbon.
Also, see my File Exchange.

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