US 9,961,341 B2Granted

Method and device for evaluating crosstalk in naked-eye stereoscopic display

AssigneeBoe Technology Group Co., Ltd.

InventorsJinye Zhu, Wang Hu, Yanbing Wu, Wei Wei, Shengbao Dun, Heliang Di

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Abstract

The present disclosure discloses a method for evaluating crosstalk in a naked-eye stereoscopic display, including: controlling a display panel to display sequentially viewpoint images; when displaying each of the viewpoint images, each of sub-pixels for displaying a current viewpoint image displays a white image, each of sub-pixels for displaying other viewpoint images displays a black image; obtaining sequentially, on a light emitting side of the display panel, first luminance values of light at respective test angles corresponding to the current viewpoint image; controlling the display panel to display an all-black image, obtaining sequentially second luminance values of light at the respective test angles; determining a crosstalk value of light at one test angle corresponding to any one of luminance peaks in the first luminance values, according to the one of luminance peaks and one second luminance value at the same test angle corresponding to the one of the luminance peaks.

Claims10

Dependent claims

A method for evaluating crosstalk in a naked-eye stereoscopic display, comprising:

displaying each of N viewpoint images sequentially by displaying a white image at sub-pixels for displaying a current viewpoint image and displaying a black image at sub-pixels for displaying viewpoint images other than the current viewpoint image;
obtaining sequentially, on a light emitting side of a display panel, corresponding first luminance values of light at respective test angles when displaying the current viewpoint image, and determining luminance peaks in all of the obtained first luminance values;
controlling the display panel to display an all-black image, and obtaining sequentially, on the light emitting side of the display panel, corresponding second luminance values of light at the respective test angles when displaying the all-black image;
determining the second luminance value at the test angle corresponding to any one of the luminance peaks;
and
determining a crosstalk value of light at the test angle corresponding to the any one of the luminance peaks in the first luminance values, according to the any one of the luminance peaks and the second luminance value at the test angle corresponding to the any one of the luminance peaks,
wherein N is a positive integer not less than 2,
wherein the obtaining sequentially, on a light emitting side of the display panel, corresponding first luminance values of light at respective test angles when displaying a current view point image, comprises:
at the respective test angles, obtaining first luminance values of light emitted by the respective sub-pixels for displaying the current viewpoint image, on an arc which takes a center of the display panel as its circle center and takes a set distance as its radius and which is located on a same horizontal plane on the light emitting side of the display panel,
wherein the determining a crosstalk value of light at the test angle corresponding to the any one of the luminance peaks in the first luminance values, according to the any one of the luminance peaks and the second luminance value at the test angle corresponding to the any one of the luminance peaks, comprises:
determining a crosstalk value of light at an i-th test angle according to a formula:
PCT
i
=
∑
j
=
1
N
⁢
⁢
Y
ji
-
L
i
-
(
N
-
1
)
⁢
M
i
L
i
-
M
i
×
100
⁢
%
;
wherein, PCTi is the crosstalk value of light at the i-th test angle on the display panel;
Li is the luminance peak in the first luminance values corresponding to the respective viewpoint images at the i-th test angle;
Mi is the second luminance value at the i-th test angle;
Yji is the first luminance value of a j-th viewpoint image at the i-th test angle;
N is a total number of the viewpoint images.

47 more elements

A device for evaluating crosstalk in a naked-eye stereoscopic display, comprising:

a controller configured to, when each of N viewpoint images is displayed sequentially on a display panel, obtain sequentially, on a light emitting side of the display panel, corresponding first luminance values of light at respective test angles when displaying a current viewpoint image;
and when an all-black image is displayed on the display panel, obtain sequentially, on the light emitting side of the display panel, corresponding second luminance values of light at the respective test angles when displaying the all-black image, wherein N is a positive integer not less than 2;
the controller being further configured to determine luminance peaks in all the obtained first luminance values;
wherein the controller is further configured to determine the second luminance value at the test angle corresponding to any one of the luminance peaks and determine a crosstalk value of light at the test angle corresponding to the any one of the luminance peaks in the first luminance values, according to the any one of the luminance peaks and the second luminance value at the test angle corresponding to the any one of the luminance peaks;
wherein the controller is further configured to, at the respective test angles, obtain first luminance values of light emitted by respective sub-pixels for displaying the current viewpoint image, on an arc which takes a center of the display panel as its circle center and takes a set distance as its radius and which is located on a same horizontal plane on the light emitting side of the display panel;
and
wherein the controller is configured to determine a crosstalk value of light at an i-th test angle according to a formula:
PCT
i
=
∑
j
=
1
N
⁢
⁢
Y
ji
-
L
i
-
(
N
-
1
)
⁢
M
i
L
i
-
M
i
×
100
⁢
%
;
wherein, PCTi is the crosstalk value of light at the i-th test angle on the display panel;
Li is the luminance peak in the first luminance values corresponding to the respective viewpoint images at the i-th test angle;
Mi is the second luminance value at the i-th test angle;
Yji is the first luminance value of a j-th viewpoint image at the i-th test angle;
N is a total number of the viewpoint images.

43 more elements

A method for evaluating crosstalk in a naked-eye stereoscopic display, comprising steps of:

when displaying each of N viewpoint images, each of sub-pixels for displaying a current viewpoint image displays a white image, each of sub-pixels for displaying other viewpoint images displays a black image, wherein N is a positive integer not less than 2;
obtaining sequentially, on a light emitting side of a display panel, corresponding first luminance values of light at respective test angles when displaying the current viewpoint image, and determining luminance peaks in all of the obtained first luminance values;
controlling the display panel to display an all-black image, obtaining sequentially, on the light emitting side of the display panel, corresponding second luminance values of light at the respective test angles when displaying the all-black image;
and
determining a crosstalk value of light at one test angle corresponding to any one of the luminance peaks in the first luminance values, according to the one of the luminance peaks and one second luminance value at the same test angle corresponding to the one of the luminance peaks;
wherein the obtaining sequentially, on a light emitting side of the display panel, corresponding first luminance values of light at respective test angles when displaying a current viewpoint image, includes:
at the respective test angles, obtaining first luminance values of light emitted by the respective sub-pixels for displaying the current viewpoint image, on an arc which takes a center of the display panel as its circle center and takes a set distance as its radius and which is located on a same horizontal plane on the light emitting side of the display panel;
and
wherein the determining a crosstalk value of light at one test angle corresponding to any one of the luminance peaks in the first luminance values, according to the one of the luminance peaks and one second luminance value at the same test angle corresponding to the one of the luminance peaks, includes:
determining a crosstalk value of light at an i-th test angle according to a formula:
PCT
i
=
∑
j
=
1
N
⁢
⁢
Y
ji
-
L
i
-
(
N
-
1
)
⁢
M
i
L
i
-
M
i
×
100
⁢
%
;
where, PCTi is the crosstalk value of light at the i-th test angle on the display panel;
Li is the luminance peak in the first luminance values corresponding to the respective viewpoint images at the i-th test angle;
Mi is the second luminance value at the i-th test angle;
Yji is the first luminance value of a j-th viewpoint image at the i-th test angle;
N is a total number of the viewpoint images.

46 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/405,313Filed 25 Apr 2014
Priority: CN 2013 1 032943331 Jul 2013
Published: US 2016/0277731 A122 Sep 2016
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04N 17/004
Diagnosis, testing or measuring for television systems or their details: for digital television systems
H04N 13/302
Image reproducers: for viewing without the aid of special glasses, i.e. using autostereoscopic displays
H04N 13/305
For viewing without the aid of special glasses, i.e. using autostereoscopic displays: using lenticular lenses, e.g. arrangements of cylindrical lenses
H04N 13/315
Using parallax barriers: the parallax barriers being time-variant