公开(公告)号：US10553015B2

公开(公告)日：2020-02-04

申请号：US15476895

申请日：2017-03-31

Applicant: GOOGLE INC.

Inventor： Michael Hemmer ,  Stephan Friedrichs

IPC: G06T15/20 ,  G06T19/00 ,  G06T19/20

Abstract: An encoder includes a processor and a memory. The memory includes code as instructions that cause the processor to receive geometric data and a viewpoint associated with the geometric data, and quantize the geometric data based on the viewpoint using a plurality of view-dependent quantization values each having a quantized distance based on a proximity to the viewpoint.

公开(公告)号：US20180137653A1

公开(公告)日：2018-05-17

申请号：US15354683

申请日：2016-11-17

Applicant: Google Inc.

Inventor： Michael Hemmer ,  Frank Galligan ,  Ondrej Stava

IPC: G06T9/40 ,  G06T1/60

CPC classification number: G06T9/40

Abstract: An encoder includes a processor, a buffer, and a memory. The memory includes code as instructions that cause the processor to perform a number of steps. The steps include partitioning a geometric construct within an axis of the geometric construct based on a point differential between two partitions, the geometric construct including geometric data, determining a number of points in the partition, storing a value indicating the number of points in the buffer, and entropy encoding the value stored in the buffer.

公开(公告)号：US20180108151A1

公开(公告)日：2018-04-19

申请号：US15475639

申请日：2017-03-31

Applicant: Google Inc.

Inventor： Michael Hemmer ,  Lauren DeNaut

IPC: G06T9/00 ,  G06T17/20

Abstract: Methods and apparatus to encode and/or decode normals of geometric representations of surfaces are disclosed herein. An example method includes receiving a plurality of points, each point representing a normal to the surface and being arranged within a tile; generating a plurality of regions within the tile, each region including points of the plurality of points; retrieving a first and second point, the first point representing a first normal and the second point representing a second normal, the first point being outside of a specified baseline region; performing a point transformation operation on the first point to produce a transformed first point of the baseline region and performing the point transformation on the second point to produce a transformed second point; generating a difference between the transformed first point and the transformed second point to produce a difference value; and encoding the difference value.

公开(公告)号：US09595976B1

公开(公告)日：2017-03-14

申请号：US15268248

申请日：2016-09-16

Applicant: GOOGLE INC.

Inventor： Michael Hemmer ,  Ondrej Stava

IPC: H03M7/34 ,  H03M7/30 ,  H03M7/40

CPC classification number: H03M7/3084 ,  H03M7/4006

Abstract: Techniques of data compression involve performing a separate compression operation on each set of corresponding bits of a sequence of bit strings in which each bit string represents a number having an upper bound. Advantageously, compressing the sets of corresponding bits produces an improved compression ratio over compressing each number in the sequence. Further, decompression is straightforward as long as sequence order is preserved and the upper bound of each number in the sequence is known.

Abstract translation: 数据压缩的技术包括对位串序列的每一对相应位执行单独的压缩操作，其中每个位串表示具有上限的数字。 有利的是，压缩相应位的集合在压缩序列中的每个数量时产生改进的压缩比。 此外，解压缩是直接的，只要序列顺序被保留并且序列中每个数字的上限是已知的。