Rendering method, computer product and display apparatus

Patent metadata

Field	Value
Publication number	US-2021358200-A1
Application number	US-201816335350-A
Country	US
Kind code	A1
Filing date	Sep 6, 2018
Priority date	Mar 27, 2018
Publication date	Nov 18, 2021
Grant date	—

Abstract

The present disclosure relates to an image rendering method for a computer product coupled to a display apparatus. The image rendering method may include rendering an entire display region of the display apparatus with a first rendering mode to generate a first rendering mode sample image, determining a target region in the entire display region, rendering the target region with a second rendering mode to generate a second rendering mode sample image, and transmitting data of the first rendering mode sample image and the second rendering mode sample image. The second rendering mode comprises at least a value of an image rendering feature that is higher than that of the first rendering mode.

First claim

1 . An image rendering method for a computer product coupled to a display apparatus, comprising:
rendering an entire display region of the display apparatus with a first rendering mode to generate a first rendering mode sample image; determining a target region in the entire display region; rendering the target region with a second rendering mode to generate a second rendering mode sample image; and transmitting data of the first rendering mode sample image and the second rendering mode sample image, wherein the second rendering mode comprises at least a value of an image rendering feature that is higher than that of the first rendering mode.

2 . The image rendering method according to claim 1 , wherein the image rendering feature comprises at least one of image resolution or bit depth.

3 . The image rendering method according to claim 2 , wherein rendering the entire display region with the first rendering mode comprises rendering the entire display region at a first image resolution; rendering the target region with the second rendering mode comprises rendering the target region at a second image resolution; and a number of pixels per unit area corresponding to the first image resolution is about ¼ to ⅓ of a number of pixels per unit area corresponding to the second image resolution.

4 . The image rendering method according to claim 1 , wherein determining the target region in the entire display region comprises:
determining a center point of the target region in the entire display region of the display apparatus; determining a ratio of an area of the target region to an area of the entire display region; obtaining a location of the target region in the entire display region based on the center point of the target region and the ratio of the area of the target region to the area of the entire display region.

5 . The image rendering method according to claim 4 , wherein determining the target region in the entire display region comprises:
determining a center point of the entire display region as the center point of the target region; determining the ratio of the area of the target region to the area of the entire display region as 1:n; obtaining a field of view α of an camera for the entire display region; calculating a field of view β of an camera for the target region using an equation below:

tan
⁡

(

α
2

)

=

tan
⁡

(

β
2

)

n

;

and
calculating a location of the target region in the entire display region based on the calculated field of view β of the camera for the target region.

6 . The image rendering method according to claim 4 , determining the target region in the entire display region comprising:
determining a user's gaze point in the entire display region as the center point of the target region is; determining the ratio of the area of the target region to the area of the entire display image as 1:n; obtaining coordinates of the gaze point (Zx, Zy); near clipping distance A near and far clipping distance A far of an camera for the entire display region; left field of view β left , right field angle β right , top field of view β up , bottom field of view β down of an camera for the target region; obtaining a range of Zx as −m≤Zx≤m and a range of Zy, −m≤Zy≤m based on the 1:n ratio of area of the target region to the area of the entire display region; obtaining boundary values of the target region according to below equations: Near clipping distance: Z near =A near ; Far clipping distance: Z far =A far ; Left boundary of near clipping plane: Z left =Z near ×tan β left ×1/n×((2×Z x −m)/m); Right boundary of near clipping plane: Z right =Z near ×tan β right ×1/n×((2×Z x +m)/m); Up boundary of near clipping plane: Z up =Z near ×tan β up ×1/n×((2×Z y +m)/m); Down boundary of near clipping plane: Z down =Z near ×tan β down ×1/n×((2×Z y −m)/m); obtaining parameters of projection matrix of the target region based on the obtained boundary values of the target region according to below equations:

{

x
=

2
×

Z
near

/

(

Z
right

-

Z
left

)

y
=

2
×

Z
near

/

(

Z
up

-

Z
down

)

a
=

(

Z
right

+

Z
left

)

/

(

Z
right

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wang Xuefeng
• Sun Yukun
• Zhao Bin
• Wang Lixin
• Li Xi
• Suo Jianwen
• Li Wenyu
• Fan Qingwen
• Peng Jinbao
• Lu Yuanjie
• Liu Yali
• Wang Chenru
• Sun Jiankang
• Zhang Hao
• Chen Lili
• Miao Jinghua

Classifications

• G09G2340/0407

  Resolution change, inclusive of the use of different resolutions for different screen areas · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title

• G06T15/005

  General purpose rendering architectures · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G06T2210/36

  Level of detail · CPC title