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45results about How to "Significant" patented technology

Power optimized collocated motion estimation method

The present invention relates to a method of motion estimation for use in a device adapted to process a sequence of frames, a frame being divided into blocks of data samples. Said motion estimation method comprises a step of computing a residual error block associated with a motion vector candidate (MV) on the basis of a current block (cb) contained in a current frame (CF) and of a reference block (rb) contained in a reference frame (RF), said reference block having a same position in the reference frame as the current block has in the current frame. The motion vector candidate defines a relative position of a virtual block (vb) containing a first reference portion (rbp1) of the reference block with reference to said reference block. The residual error block is then computed from a first difference between data samples of the first reference portion and corresponding data samples of a first current portion (cbp1) of the current block, and a second difference between a prediction of data samples of a second reference portion (pred) of the virtual block, which is complementary to the first reference portion, and data samples of a second current portion (cbp2) of the current block, which is complementary to the first current portion.
Owner:ENTROPIC COMM INC

Evaluation method and device for visible light full-link simulation image, electronic equipment and medium

The embodiment of the invention provides an evaluation method for a visible light full-link simulation image. The evaluation method comprises the following steps: acquiring original optical image dataof actual imaging of an on-orbit satellite; acquiring image data of a full-link simulation system corresponding to the original optical image; determining a first-level evaluation index, and evaluating the full-link simulation system according to the first-level evaluation index; obtaining an evaluation result of the full-link simulation system, and determining a secondary evaluation index corresponding to the evaluation result according to the evaluation result; and calculating an evaluation index of the image data of the full-link simulation system according to the secondary evaluation index calculation result. In this way, objective index evaluation of corresponding level stages can be carried out according to different remote sensing technology levels, target interpretation can be oriented, auxiliary support of problem analysis bases and simulation image availability conclusions can be provided, and the reproducibility of the simulation technology for satellite imaging system performance can be effectively verified.
Owner:中国人民解放军61646部队

Optical module tube shell structure with high-speed heat dissipation

The invention discloses an optical module tube shell structure with high-speed heat dissipation. The optical module tube shell structure comprises an optical module body, a heat transfer module and aheat dissipation module, wherein the optical module body comprises a chip, a groove is formed in the middle of the optical module body, and the chip of the optical module body is arranged in the groove; the heat transfer module is arranged at the opening of the groove and is attached to the chip; the heat dissipation module is arranged at the side, away from the chip, of the heat transfer module.Heat generated by the chip is transmitted to the heat dissipation module for heat dissipation through the heat transfer module. According to the invention, compared with a traditional optical module heat dissipation structure, heat generated by the optical module can be directly transferred to the outside through a main component (namely the chip) of the optical module, so that the heat generatedby the optical module is rapidly dissipated, the optical module is prevented from being damaged by high temperature, the service life of the optical module is prolonged, the failure rate of the optical module is reduced, the structure is simple, and the heat dissipation effect is remarkable.
Owner:武汉永鼎光通科技有限公司
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