In my Android-OpenCV application, I am saving the Image with ".JPG" extention. they are 1056-by-704 and are acceptable but quality is not good and the image is not sharp enough for processing.
It is the format of saved matrix as image : Mat(height, width, CvType.CV_32FC4)
Can I save them with better quality? If no!! does anybody have idea to make the image more shorp with better quality?
Thanks
JPEG is a lossy format, so even with 100 for CV_IMWRITE_JPEG_QUALITY the quality will decrease. Maybe you should try PNG instead which is lossless format and more logic when you have an alpha channel.
Are you setting the correct parameters for JPG compression while saving image? Regards to the second question, there is no better "quality" than the original image (i.e. no JPEG compression) ;) Any other processing (filtering, sharpening, histogram stretching) would "invent" pixels not exisiting in the original image... you may "perceive" better contrast or definition, but you are actually losing quality.
Asked: 2013-04-24 08:01:32 -0600
Seen: 2,291 times
Last updated: Apr 24 '13
