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1 results about "Available bit rate" patented technology
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Available bit rate (ABR) is a service used in ATM networks when source and destination don't need to be synchronized. ABR does not guarantee against delay or data loss. ABR mechanisms allow the network to allocate the available bandwidth fairly over the present ABR sources. ABR is one of five service categories defined by the ATM Forum for use in an ATM Network.
Inspection image block gradient compression system based on dynamic sensing of channel quality
PendingCN122248168AError preventionDigital video signal modificationPattern recognitionComputer graphics (images)
This invention discloses a channel quality-dynamically-aware image segmentation gradient compression system, comprising a state awareness module, a gradient map generation module, a segmentation module, a gradient compression module, and a post-processing module. The state awareness module calculates the available bit rate of the channel at the current moment. The gradient map generation module receives the original image, calculates the gradient magnitude of each pixel, and generates a gradient map. The segmentation module generates an image segment set guided by the gradient map. The gradient compression module receives the image segment set and the original image, quantizes and encodes the measured values, and generates a compressed bitstream. The post-processing module outputs the reconstructed image. This invention, under channel-constrained conditions, prioritizes the transmission detail fidelity of key areas with limited bit resources, avoiding the problems of overall image quality degradation and loss of key information, leading to missed detections and misjudgments, common in traditional methods.
Owner:HUBEI ELECTRIC POWER TRANSMISSION & DISTRIBUTION ENG