Parameter determining method, storage medium, and electronic device

Patent metadata

Field	Value
Publication number	US-12382012-B2
Application number	US-202218272598-A
Country	US
Kind code	B2
Filing date	Jan 18, 2022
Priority date	Jan 21, 2021
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

Disclosed are a parameter determining method, a storage medium, and an electronic device. The method comprising: obtaining a standard test image having a preset spatial frequency and a contrast ratio of the standard test image; obtaining a contrast ratio of a viewing effect image corresponding to the standard test image on the basis of the standard test image, the viewing effect image corresponding to the standard test image being an image viewed by a viewer by means of a three-dimensional (3D) display apparatus at a preset viewing distance when the 3D display apparatus displays the standard test image; calculating a ratio of the contrast ratio of the viewing effect image corresponding to the standard test image to the contrast ratio of the standard test image, and determining a resolution parameter at the preset viewing distance.

First claim

The invention claimed is:

1. A parameter determining method, comprising:
obtaining a standard test image with a preset spatial frequency and a contrast ratio of the standard test image;
obtaining a contrast ratio of a viewing effect image corresponding to the standard test image based on the standard test image, wherein the viewing effect image corresponding to the standard test image is an image that a viewer is able to view through a three-dimensional (3D) display apparatus at a preset viewing distance when the 3D display apparatus displays the standard test image; and
calculating a ratio of the contrast ratio of the viewing effect image corresponding to the standard test image to the contrast ratio of the standard test image, and determining a resolution parameter at the preset viewing distance, wherein the resolution parameter at the preset viewing distance is used for representing stereoscopic display quality when the 3D display apparatus displays an image with the preset spatial frequency at the preset viewing distance.

2. The method according to claim 1 , wherein the standard test image comprises a plurality of test images with different preset spatial frequencies, and the viewing effect image corresponding to the standard test image comprises a plurality of effect images corresponding to the plurality of test images one by one, and the plurality of effect images have different spatial frequencies.

3. The method according to claim 1 , wherein the standard test image comprises a black-and-white line pair image.

4. The method according to claim 1 , wherein the obtaining the contrast ratio of the viewing effect image corresponding to the standard test image based on the standard test image comprises:
obtaining the viewing effect image corresponding to the standard test image based on the standard test image; and
determining the contrast ratio of the viewing effect image corresponding to the standard test image based on the viewing effect image corresponding to the standard test image.

5. The method according to claim 4 , wherein the determining the contrast ratio of the viewing effect image corresponding to the standard test image based on the viewing effect image corresponding to the standard test image comprises:
obtaining a maximum gray value and a minimum gray value in the viewing effect image corresponding to the standard test image;
based on the maximum gray value and the minimum gray value in the viewing effect image corresponding to the standard test image, calculating the contrast ratio of the viewing effect image corresponding to the standard test image through a following formula:

C
=

I
max

-

I
min

I
max

+

I
min

wherein C represents the contrast ratio, I max represents the maximum gray value, and I min represents the minimum gray value.

6. The method according to claim 4 , wherein the obtaining the viewing effect image corresponding to the standard test image based on the standard test image comprises:
obtaining a plurality of image misalignment parameters and a plurality of crosstalk energy parameters corresponding to a plurality of viewpoints of the 3D display apparatus, wherein a crosstalk energy parameter corresponding to each viewpoint is a sum of ratios of energy of the viewpoint to which adjacent viewpoints of the viewpoint bring crosstalk; and
performing crosstalk superposition on the standard test image to obtain the viewing effect image corresponding to the standard test image based on the plurality of image misalignment parameters and the plurality of crosstalk energy parameters corresponding to the plurality of viewpoints.

7. The method according to claim 6 , wherein the performing crosstalk superposition on the standard test image to obtain the viewing effect image corresponding to the standard test image based on the plurality of image misalignment parameters and the plurality of crosstalk energy parameters corresponding to the plurality of viewpoints comprises:
translating the standard test image using an image misalignment parameter corresponding to each viewpoint as a translation distance, to obtain a translated first image corresponding to each viewpoint;
multiplying the translated first image corresponding to each viewpoint by a crosstalk energy parameter corresponding to each viewpoint to obtain a second image after crosstalk corresponding to each viewpoint; and
superimposing the second image after crosstalk corresponding to each viewpoint on the standard test image to obtain the viewing effect image corresponding to the standard test image.

8. The method according to claim 6 , wherein the obtaining the plurality of image misalignment parameters and the plurality of crosstalk energy parameters corresponding to the plurality of viewpoints of the 3D display apparatus comprises:
obtaining a plurality of white light brightness curves corresponding to the plurality of viewpoints, wherein a white light brightness curve corresponding to each viewpoint is a brightness curve obtained when a pixel corresponding to the viewpoint displays a white picture and other pixels other than the pixel corresponding to the viewpoint display a black picture in the 3D display apparatus;
determining the plurality of crosstalk energy parameters corresponding to the plurality of viewpoints according to the plurality of white light brightness curves corresponding to the plurality of viewpoints; and
determining the plurality of image misalignment parameters corresponding to the plurality of viewpoints based on the preset viewing distance.

9. The method according to claim 8 , wherein the determining the plurality of image misalignment parameters corresponding to the plurality of viewpoints based on the preset viewing distance comprises:
obtaining a parallax angle of the viewer and a quantity of viewpoints between two eyes of the viewer at the preset viewing distance;
according to the preset viewing distance, the parallax angle of the viewer at the preset viewing distance, and the quantity of viewpoints between two eyes of the viewer, calculating the plurality of image misalignment parameters corresponding to the plurality of viewpoints through following formulas:

Δ
⁢
D

=

L
×

tan
⁡
(
Δθ
)

δ
=

Δ
⁢
D

N

D
n

=

round
(

n
×
δ

Assignees

• Boe Technology Group Co Ltd

Inventors

• Ma Sen
• Hong Tao
• Zhu Jinye
• Zhou Chunmiao
• Yu Jing
• Han Tianyang
• Liu Jing

Classifications

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title

• H04N13/383

  for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes · CPC title

• H04N13/305

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• H04N13/327

  Calibration thereof · CPC title

• H04N17/00

  Diagnosis, testing or measuring for television systems or their details · CPC title