Patent №
US 6,944,349
Granted
2005-09-13
Filed 2000
Owner
CANON KABUSHIKI KAISHA
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
09550319
In a digital filtering device adopting wavelet transformation, a memory occupancy level of processed data is decreased. An image is divided into a plurality of first blocks each consisting of W pixels by H pixels. Wavelet transformation is performed on each of the first blocks in order to produce sub-frequency band blocks LL, LH, HL, an HH. Sub-frequency band blocks LL produced from the first blocks are grouped in order to produce second blocks having the same size as the first blocks. Wavelet transformation is performed again on the second blocks.
AI classification
Ownership
CANON KABUSHIKI KAISHA
assignment · 111000609
Assignors
ONNO, PATRICE, MAJANI, ERIC, ANDREW, JAMES PHILIP
On an employer assignment, the assignors are typically the inventors.