公开(公告)号：US20210397826A1

公开(公告)日：2021-12-23

申请号：US17339249

申请日：2021-06-04

Applicant: Apple Inc.

Inventor： Xiaoxia SUN ,  Jiefu ZHAI ,  Ke ZHANG ,  Xiaosong ZHOU ,  Hsi-Jung WU

IPC: G06K9/00 ,  G06K9/46 ,  G06T3/40 ,  G06N3/04

Abstract: Video object and keypoint location detection techniques are presented. The system includes a detection system for generation locations of an object's keypoints along with probabilities associated with the locations, and a stability system for stabilizing keypoint locations of the detected objects. In some aspects, the generated probabilities are two-dimensional array correspond locations within input images, and stability system fits the generated probabilities to a two-dimensional probability distribution function.

公开(公告)号：US20230396819A1

公开(公告)日：2023-12-07

申请号：US18327364

申请日：2023-06-01

Applicant: APPLE INC.

Inventor： Ke ZHANG ,  Xiaoxia SUN ,  Shujie LIU ,  Xiaosong ZHOU ,  Jian LI ,  Xun SHI ,  Jiefu ZHAI ,  Albert E KEINATH ,  Hsi-Jung WU ,  Jingteng XUE ,  Xingyu ZHANG ,  Jun XIN

IPC: H04N21/2343 ,  H04N7/01 ,  G06V40/16 ,  G06V40/20 ,  G06V30/10 ,  H04N21/231

CPC classification number: H04N21/2343 ,  H04N7/0127 ,  H04N21/231 ,  G06V40/20 ,  G06V30/10 ,  G06V40/172

Abstract: A video delivery system generates and stores reduced bandwidth videos from source video. The system may include a track generator that executes functionality of application(s) to be used at sink devices, in which the track generator generates tracks from execution of the application(s) on source video and generates tracks having a reduced data size as compared to the source video. The track generator may execute a first instance of application functionality on the source video, which identifies region(s) of interest from the source video. The track generator further may downsample the source video according to downsampling parameters, and execute a second instance of application functionality on the downsampled video. The track generator may determine, from a comparison of outputs from the first and second instances of the application, whether the output from the second instance of application functionality is within an error tolerance of the output from the first instance of application functionality. If so, the track generator may generate a track from the downsampled video. In this manner, the system generates tracks that enable reliable application operation when processed by sink devices but also have reduced size as compared to source video.