Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
2006-04-18
2006-04-18
Johns, Andrew W. (Department: 2621)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
Reexamination Certificate
active
07031536
ABSTRACT:
A signal storage processor (101) stores signals input from a signal input unit (100) in a buffer (102) for respective lines. A vertical discrete wavelet transformer (103) reads out an index value L from the signal storage processor (101), and obtains a reference address B from the value L. If L=2, B=2. If L=4, B=0. Furthermore, the vertical discrete wavelet transformer (103) reads out the i-th column of sets of data, which are stored in the buffer (102) and are continuous in the vertical direction (i.e., data read out from four addresses (addresses in the buffer (102)) i×4+B, i×4+mod((B+1),4), i×4+mod((B+2),4), and i×4+mod((B+3),4)), and computes the one-dimensional discrete wavelet transforms of the readout data.
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Alavi Amir
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Johns Andrew W.
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