公开(公告)号：US20180278936A1

公开(公告)日：2018-09-27

申请号：US15922723

申请日：2018-03-15

Applicant: QUALCOMM Incorporated

Inventor： Fnu HENDRY ,  Muhammed COBAN ,  Geert VAN DER AUWERA ,  Marta KARCZEWICZ

IPC: H04N19/126 ,  H04N19/19 ,  H04N19/597

CPC classification number: H04N19/126 ,  H04N19/103 ,  H04N19/124 ,  H04N19/147 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/19 ,  H04N19/597

Abstract: Techniques and systems are provided for processing 360-degree video data. For example, a picture of the 360-degree video data can be obtained. The picture can include samples projected from a three-dimensional format to a two-dimensional format. A weight value can be determined for at least one sample of the picture. The weight value can be determined based at least on a position of the at least one sample in the picture. At least one adaptive parameter can be determined for the at least one sample using the determined weight value. The at least one adaptive parameter can include one or more of an adaptive weighted distortion, an adaptive weighted quantization parameter value, or an adaptive weighted lambda value. A cost associated with coding the at least one sample using one or more coding modes can be determined using the at least one adaptive parameter of the at least one sample.

公开(公告)号：US20180276826A1

公开(公告)日：2018-09-27

申请号：US15926957

申请日：2018-03-20

Applicant: QUALCOMM Incorporated

Inventor： Geert VAN DER AUWERA ,  Muhammed COBAN ,  Marta KARCZEWICZ

IPC: G06T7/11 ,  G06T3/00 ,  G02B27/01 ,  G06T19/00

CPC classification number: G06T7/11 ,  G02B27/0172 ,  G02B2027/0138 ,  G02B2027/014 ,  G06T3/005 ,  G06T3/0062 ,  G06T3/0093 ,  G06T19/006 ,  H04N5/23238 ,  H04N13/117 ,  H04N13/161 ,  H04N13/194 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/197 ,  H04N19/597 ,  H04N19/85 ,  H04N19/88

Abstract: Provided are systems and methods for processing 360-degree video data. In various implementations, a spherical representation of a 360-degree video frame can be segmented into a top region, a bottom region, and a middle region. The middle region can be mapped into one or more rectangular areas of an output video frame. The top region can be mapped into a first rectangular area of the output video frame using a mapping that converts a square to a circle, such that pixels in the circular top region are expanded to fill the first rectangular region. The bottom region can be mapped into a second rectangular area of the output video frame such that pixels in the circular bottom region are expanded to fill the second rectangular region.