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Perceptual three-dimensional (3D) video coding based on depth information

專利號
US10091513B2
公開日期
2018-10-02
申請人
Texas Instruments Incorporated(US TX Dallas)
發(fā)明人
Do-Kyoung Kwon; Madhukar Budagavi; Ming-Jun Chen
IPC分類
H04N19/00; H04N19/154; H04N19/597; H04N19/176; H04N19/124; H04N19/142; H04N13/00
技術(shù)領(lǐng)域
video,depth,perceptual,frame,in,2d,macroblock,frames,coding,quality
地域: TX TX Dallas

摘要

A method for encoding a multi-view frame in a video encoder is provided that includes computing a depth quality sensitivity measure for a multi-view coding block in the multi-view frame, computing a depth-based perceptual quantization scale for a 2D coding block of the multi-view coding block, wherein the depth-based perceptual quantization scale is based on the depth quality sensitive measure and a base quantization scale for the 2D frame including the 2D coding block, and encoding the 2D coding block using the depth-based perceptual quantization scale.

說明書

Objects at different depths in the scene of a stereoscopic video sequence will have different displacements, i.e., disparities, in left and right frames of the stereoscopic video sequence, thus creating a sense of depth when the stereoscopic image is viewed on a stereoscopic display. The term disparity refers to the shift that occurs at each point in a scene between the left and right images. This shift may be mostly horizontal when the imaging sensors used to capture the left and right images are offset horizontally. As illustrated in FIG. 1, at the point of convergence D1, corresponding objects in the left and right images are said to have zero horizontal disparity and, when viewed on a stereoscopic display, will appear to be on the display plane. Objects in front of the convergence point, e.g., at point D3, will have negative disparity, i.e., an object in the left image is horizontally shifted to the right of the corresponding object in the right image and will appear in front of the display plane (closer to the viewer). Objects behind the convergence point, e.g., at point D2, will have positive disparity, i.e., an object in the left image is horizontally shifted to the left of the corresponding object in the right image and will appear to be behind the display plane (further from the viewer).

權(quán)利要求

1
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