Image analysis – Image compression or coding – Interframe coding
Reexamination Certificate
2011-03-22
2011-03-22
Dang, Duy M (Department: 2624)
Image analysis
Image compression or coding
Interframe coding
C382S168000
Reexamination Certificate
active
07912303
ABSTRACT:
The present invention discloses an apparatus for automatically generating thumbnail images for a video browser and a video recording and reproducing device, and a method therefor. A difference between histograms of two DC images of a current frame I picture and a previous frame I picture is calculated and compared with a predetermined reference value for deciding a stabilization section. When the difference between the histograms of the current I picture DC image and the previous I picture DC image does not exceed the reference value, the corresponding I picture DC image is outputted as the thumbnail image. Here, a blank test is executed to exclude a dark original image whose contents are indistinguishable. Only the DC image of the I picture passing through the blank test is outputted as the thumbnail image.
REFERENCES:
patent: 7257261 (2007-08-01), Suh
Dang Duy M
Lee Hong Degerman Kang & Waimey
LG Electronics Inc.
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