Title :
Reconstruction of local features for facial video compression
Author :
Chatterjee, Shoma ; Banerjee, Subhashis ; Biswas, K.K.
Author_Institution :
Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., New Delhi, India
Abstract :
We suggest a feature based facial image reconstruction technique. The encoding technique utilizes the affine structure of the face to capture the global facial motion. The structure information is transmitted only once at the bootstrapping stage. After that only the motion information for each frame is used to reconstruct the image at the decoder. An attempt is made to perform local reconstruction without any colour patching. For local reconstruction lips are tracked across frames using the snake model. An online database of facial features is created from distinct feature templates. The lip feature in each frame is locally reconstructed from existing templates using local warping. The eye templates for each frame are also recognized and pasted from the online database.
Keywords :
data compression; decoding; feature extraction; image motion analysis; image reconstruction; video coding; affine structure; bootstrapping stage; decoder; eye templates; facial features; facial image reconstruction; facial video compression; feature templates; global facial motion; image reconstruction; lip feature; local features reconstruction; local warping; online database; snake model; structure information transmission; Computer science; Decoding; Facial features; Image coding; Image databases; Image reconstruction; Lips; Predictive encoding; Spatial databases; Video compression;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.899272