Hello,

I think you are talking one library that is mentioned in one of IPP white paper. The library is developed by the other parties and is optimized with Intel IPP. You can download IPP JPEG sample code for the your evaluation.

Thanks,
Chao

>>...I want to use the library to verify the thumbnail perofrmance. but it seems that I cannnot find it . please someone help...

Please take a look at article:

libNthumb, The NHN* Performance Primitive for Real-Time Creation of Thumbnail Image with Intel® IPP Library
Submitted by Tai Ha (Intel)

Web-link: http://software.intel.com/en-us/articles/libnthumb-the-nhn-performance-p...

and try to contact Tai Ha (Intel).