https://community.intel.com/t5/Intel-Integrated-Performance/Which-JPEG-lib/m-p/875709#M9482 Hi all<BR />I'm developping software which need rapid time to encoding and resizing image.<BR />I'm under Windows XP.<BR />My source frame buffer are MPEG4 decoded in YUV420.<BR />I have to resize YUV420 image (with interpollation) and encode these image in JPEG...<BR />My library choice is difficult : IJL (deprecated ?), IJG delivery with IPP or INTEL lib used in JPEGView).<BR />Please can you help me in library choice ? Which lib have best encoding time ?<BR />About resizing image IPP is good for this ?<BR /><BR />PS : I read in other threads of this forum that I have to upscale my YUV420 source image in YUV422 to encode it in JPEG ? Is this OK ? Have this an impact on visual quality image ?<BR /><BR />Best regards<BR /> Wed, 21 Mar 2007 09:41:07 GMT loic69 2007-03-21T09:41:07Z https://community.intel.com/t5/Intel-Integrated-Performance/Which-JPEG-lib/m-p/875709#M9482 Hi all<BR />I'm developping software which need rapid time to encoding and resizing image.<BR />I'm under Windows XP.<BR />My source frame buffer are MPEG4 decoded in YUV420.<BR />I have to resize YUV420 image (with interpollation) and encode these image in JPEG...<BR />My library choice is difficult : IJL (deprecated ?), IJG delivery with IPP or INTEL lib used in JPEGView).<BR />Please can you help me in library choice ? Which lib have best encoding time ?<BR />About resizing image IPP is good for this ?<BR /><BR />PS : I read in other threads of this forum that I have to upscale my YUV420 source image in YUV422 to encode it in JPEG ? Is this OK ? Have this an impact on visual quality image ?<BR /><BR />Best regards<BR /> Wed, 21 Mar 2007 09:41:07 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Which-JPEG-lib/m-p/875709#M9482 loic69 2007-03-21T09:41:07Z https://community.intel.com/t5/Intel-Integrated-Performance/Which-JPEG-lib/m-p/875710#M9483 <P>Hello,</P> <P>IPP JPEGencoder is able to take on input YCbCr422 pixel interleaved image or usual BGR/RGB/Gray images without subsampling. The first one can be faster as you skip color convertion step. Resampling from 420 to 422 should not impact visual quality significantly.</P> <P>Actually, JPEG was dicussed many times on this forum, you may want to search for JPEG keyword through forum. For example, please take a look on this post:</P> <P><A href="https://community.intel.com/isn/Community/en-US/forums/permalink/5480841/5481384/ShowThread.aspx#5481384">Re: jpeg speed</A></P> <P>Regards,<BR /> Vladimir</P> Wed, 21 Mar 2007 16:39:15 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Which-JPEG-lib/m-p/875710#M9483 Vladimir_Dudnik 2007-03-21T16:39:15Z