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dbyoung

China
7 Posts
Posted - Oct 07 2023 :  00:39:59  Show Profile  Reply
Is there a way to get the white rectangular box in the middle and remove the background?





Child

xequte

38194 Posts
Posted - Oct 07 2023 :  01:42:09  Show Profile  Reply
Hi

That might be difficult because of the inconsistent noise in the image. You could try thresholding the image to isolate the white region. If that works you can calculate its area:

http://www.imageen.com/help/TImageEnProc.ConvertToBWLocalThreshold.html

Nigel
Xequte Software
www.imageen.com
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dbyoung

China
7 Posts
Posted - Oct 07 2023 :  18:11:35  Show Profile  Reply
Grayscale, binarization, and corrosion are all difficult to obtain.
Thank your reply.

Child
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xequte

38194 Posts
Posted - Oct 08 2023 :  17:20:42  Show Profile  Reply
GrayScale is available via ImageEnView1.Proc.ConvertToGray();

http://www.imageen.com/help/TImageEnProc.ConvertToGray.html

There are various algorithms to convert to 1bit:

http://www.imageen.com/help/TImageEnProc.ConvertToBWOrdered.html
http://www.imageen.com/help/TImageEnProc.ConvertToBWLocalThreshold.html
http://www.imageen.com/help/TImageEnProc.ConvertToBW_FloydSteinberg.html
https://www.imageen.com/help/TImageEnProc.ConvertToBWThreshold.html

Regarding corrosion, do you mean noise removal:

Monochrome: http://www.imageen.com/help/TImageEnProc.RemoveNoise.html
Color: http://www.imageen.com/help/TIEVisionImage.fastNlMeansDenoisingColored.html

Or Erosion:

http://www.imageen.com/help/TIEVisionImage.erode.html




Nigel
Xequte Software
www.imageen.com
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