120 likes | 261 Views
Efficient Light Balancing Techniques for Text Images in Video Presentation Systems Shih-Chang Hsia and Po-Shien Tsai. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 15, NO. 8, AUGUST 2005 指導老師:萬書言 學生:賴薏如. original. Using hight gain. Using low gain. Processing flow.
E N D
Efficient Light Balancing Techniques for Text Imagesin Video Presentation SystemsShih-Chang Hsia and Po-Shien Tsai IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 15, NO. 8, AUGUST 2005 指導老師:萬書言 學生:賴薏如
original Using hight gain Using low gain
BMV :black mean variance :process pixel N*N:block size
:information of light distribution at the (j,k)th pixel M:number of interpolated data in the marked line K: interpolated location
:Number of previous text-block :black variance in the Kth text block :black mean in the Kth text block
The end THANKS