https://community.intel.com/t5/Intel-Integrated-Performance/Compressed-Image-quality/m-p/892379#M11667 <P>Hello,</P> <P>The IJL library only implements JPEG lossy compression mode, which mean there is always quality losses at compression (although you can control amount of loss by quality parameter but can't completely avoid this).</P> <P>If you are looking at lossless compression I'd recommend you to check UIC sample (unified image codec) where we do provide IPP boosted JPEG (both lossy and lossless), JPEG2000 (both lossy and lossless) and PNG (lossless) compression algorithms.</P> <P>Regards,<BR /> Vladimir</P> Mon, 15 Feb 2010 17:50:11 GMT Vladimir_Dudnik 2010-02-15T17:50:11Z https://community.intel.com/t5/Intel-Integrated-Performance/Compressed-Image-quality/m-p/892378#M11666 <DIV id="_mcePaste">Hello</DIV> <DIV></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste">I'm using sample IJL(IPP 6.1) for image compression. When i zoomed (200% ~ 300%) the compressed image,</DIV> <DIV>i observed the followings artifacts</DIV> <DIV></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste">- noise around characters,</DIV> <DIV id="_mcePaste">- ringing noise around sharp edges,</DIV> <DIV id="_mcePaste">- blurring,</DIV> <DIV id="_mcePaste">- color distortion.</DIV> <DIV></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste">If i set quality factor to 100 still compressed jpeg image shows above artifacts.</DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> <DIV>How to remove these artifacts ? Please let me know any possible solution.</DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> <DIV></DIV> <DIV>Thanks in advance :-))</DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> <DIV id="_mcePaste"></DIV> Mon, 15 Feb 2010 10:35:07 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Compressed-Image-quality/m-p/892378#M11666 amit08 2010-02-15T10:35:07Z https://community.intel.com/t5/Intel-Integrated-Performance/Compressed-Image-quality/m-p/892379#M11667 <P>Hello,</P> <P>The IJL library only implements JPEG lossy compression mode, which mean there is always quality losses at compression (although you can control amount of loss by quality parameter but can't completely avoid this).</P> <P>If you are looking at lossless compression I'd recommend you to check UIC sample (unified image codec) where we do provide IPP boosted JPEG (both lossy and lossless), JPEG2000 (both lossy and lossless) and PNG (lossless) compression algorithms.</P> <P>Regards,<BR /> Vladimir</P> Mon, 15 Feb 2010 17:50:11 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Compressed-Image-quality/m-p/892379#M11667 Vladimir_Dudnik 2010-02-15T17:50:11Z