发明名称 Downsizing an encoded image
摘要 There is provided a system, a computer program product, program storage device readable by machine, and a method of downsizing an input disjoint block level encoded image. According to examples of the presently disclosed subject matter, the method can include calculating a DCT downsize ratio for downsizing the input image in a DCT domain according to a target downsize ratio and according to a size of a DCT transform length associated with the input image; adapting an I-DCT according to the DCT domain downsize ratios; performing the adapted I-DCT; providing an intermediate image as output of a DCT domain process; and applying a pixel domain interpolation to the intermediate image according to dimensions of the intermediate image and according to dimensions of the target image.
申请公布号 US9042670(B2) 申请公布日期 2015.05.26
申请号 US201113823995 申请日期 2011.09.15
申请人 Beamr Imaging Ltd 发明人 Carmel Sharon;Gill Dror;Shoham Tamar
分类号 G06K9/46;G06T9/00;H04N19/60;H04N19/132;H04N19/186;H04N19/154;H04N19/18;H04N19/40 主分类号 G06K9/46
代理机构 Browdy and Neimark, PLLC 代理人 Browdy and Neimark, PLLC
主权项 1. A method of downsizing an input disjoint block level encoded image, comprising: Calculating, by a Discrete Cosine Transform (DCT) domain processor, a DCT downsize ratio for downsizing the input image in a DCT domain according to a target downsize ratio and according to a size of a DCT transform length associated with the input image; Adapting, by the DCT domain processor, an I-DCT according to the DCT domain downsize ratios, including configuring a DCT anti-aliasing filter (“AAF”) according to the target downsize ratio, and applying the DCT AAF to DCT coefficients corresponding to the input image; performing, by the DCT domain processor, the adapted I-DCT; providing, by the DCT domain processor, an intermediate image as output of a DCT domain process; and applying, by a pixel domain processor, a pixel domain interpolation to the intermediate image according to dimensions of the intermediate image and according to dimensions of the target image.
地址 Tel Aviv IL