白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

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

專利號(hào)
US10091513B2
公開日期
2018-10-02
申請(qǐng)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

Any suitiable depth quality sensitivity function may be used. For example, the function of Eq. 2 may be used. The values of do and the tuning parameters co and c1 may depend on the particular application in which the video encoder is used, e.g., the values may be constants in some applications, may be user-settable parameters in some applications, may be adapted in some way for scene changes in some applications, etc. In some embodiments, the value of d0 may be determined for each multi-view frame as the maximum of the depths of the macroblocks in the multi-view frame. In some embodiments, the value of d0 may be adapted periodically based on the maximum macroblock depth of a sequence of multi-view frames. In some embodiments in which the background of a scene does not change significantly over time, e.g., for video surveillance, the value of d0 and the values of the tuning parameters co and c1 may be constants determined based on the background of the scene and the expected depths of objects that may move through the scene. In some embodiments, the video analytics component 220 (see FIG. 2) may analyze the scene across muliple frames and provide information regarding scene changes to the video encoder component 218 that may be used to adapt the values of d0, co and/or c1 for scene changes. In some embodiments, the depth quality sensitivity function may not be linear. For example, a quadratic depth quality sensitivity function may be used when both closer and more distant objects are more visually important than objects in between.

權(quán)利要求

1
微信群二維碼
意見反饋