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 |