Image analysis – Image compression or coding – Quantization
Reexamination Certificate
2003-11-18
2008-10-14
Ishrat, Sherali (Department: 2624)
Image analysis
Image compression or coding
Quantization
Reexamination Certificate
active
07437011
ABSTRACT:
A color-space conversion processor converts input digital image data into YUV color space, and a wavelet conversion processor performs wavelet conversion processing on the data. A face-area recognition processor extracts a face area in the image based on the obtained conversion coefficients. A quantization processor performs quantization processing on the input conversion coefficients while changing quantization coefficients used in the quantization processing in and out of the extracted face area. A variable-length coding processor encodes the quantized coefficients. A code synthesizing processor synthesizes the obtained respective color component code data with information indicating the face area extracted by the face-area recognition processor, and outputs the synthesized data as a code string.
REFERENCES:
patent: 6272253 (2001-08-01), Bannon et al.
patent: 6275614 (2001-08-01), Krishnamurthy et al.
patent: 7-203436 (1995-08-01), None
Huasheng et al., “Face tracking using skin-color model and gabor wavelet”, IEEE 0-7803-7488-6/02, pp. 837-840.
Barzykina et al., Image compression for facial photographs, Mar. 1997, IEEE 0-7803-3905, pp. 322-325.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Ishrat Sherali
LandOfFree
Image processing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4016448