5 results about "Residual frame" patented technology

The invention relates to the technical field of computer vision and video processing, and provides a residual frame video processing convolution method based on dynamic gating, which comprises the following steps of: carrying out gray conversion and Gaussian filtering processing on a current frame image and a previous frame image; calculating an inter-frame difference image and carrying out binarization processing to obtain a motion area mask; performing morphological expansion operation on the mask image; extracting the contour of the motion area and calculating a minimum bounding rectangle to obtain a bounding box; carrying out merging processing on the overlapped bounding boxes; updating the synthesized background frame based on the combined bounding box, and copying the pixels of the motion area of the current frame to the corresponding position of the background frame; and outputting the optimized bounding box set and the updated synthesized background frame. According to the method, the calculation efficiency and the resource utilization rate of video processing are improved, and meanwhile, the timing sequence continuity and the space consistency of a processing result are ensured through a strategy of keeping the static region unchanged and only updating the motion region.

The invention discloses a design method for improving the transmission stability of a CoaXPress acquisition system, and relates to the technical field of machine vision. The invention provides a low-resource, reversible and self-adaptive data randomization mapping scheme aiming at the problems of signal baseline drift and error codes caused by the combination of a Nyquist code pattern and a random code pattern under 8B / 10B coding. The method comprises the following steps: when an acquisition card is idle, sending a detection feature code pattern DETECTWORD at an interval of 10ms; starting a mapping function after the camera detects the abnormal code pattern, performing byte-by-byte XOR processing on the content of the data packet containing the abnormal code pattern by adopting the mapping function, only processing the content, not moving the tail of the packet header, and changing the last K27.7 of the packet header into K29.7; and after the acquisition card identifies the packet header which is K29.7 finally, performing same function inverse XOR on the content to recover the original data and repair the packet header. According to the method, the bit error rate is remarkably reduced, the residual frame loss phenomenon is eliminated, and the system transmission stability is greatly improved on the premise that the hardware cost is not increased.

A method and an apparatus are disclosed for video coding using an improved in-loop filter. The video coding method and the apparatus generate a residual frame from a reconstructed frame using a deep learning model. The video coding method and the apparatus improve performance of an in-loop filter by approximating an original residual frame by applying the generated residual frame to a linear model.

A method and an apparatus are disclosed for video coding using an improved in-loop filter. The video coding method and the apparatus generate a residual frame from a reconstructed frame using a deep learning model. The video coding method and the apparatus improve performance of an in-loop filter by approximating an original residual frame by applying the generated residual frame to a linear model.

In various embodiments, a localized video encoding application encodes localized videos. In operation, the localized video encoding application computes a prediction frame based on a target frame of a localized video and at least a portion of a reference frame of a decoded original video. The localized video encoding application computes a residual frame based on the prediction frame and the target frame of the localized video. The localized video encoding application performs one or more encoding operations on the residual frame to generate a frame of an encoded localization layer. The frame of the encoded localization layer and at least one frame of an encoded original video are subsequently transmitted to another device for decoding.