On Thu, Mar 18, 2010 at 06:31:53PM +0530, sanalkumar mr wrote:
> Dear all......I' ve to convert a passport size photo to stamp size. I tried
> $ convert -resize 51x37 sanal.jpg san.JPEG
> giving a low quality image.Any option to get a good quality image...?
> And the properties of the input image is given below
> $ identify sanal.jpg
> sanal.jpg JPEG 260x300 260x300+0+0 DirectClass 8-bit 35.0488kb
> I also tried GIMP that also was in vain.Thanks in advance....Sanalkumar
> --

Hello Sir,

I believe that the option -quality is what you need.
$convert -resize 51x37 -quality 80% sanal.jpg san.JPEG
This will retain 80% picture quality.

Thanks,
Jos Collin

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