Method and display apparatus for correcting distortion caused by lenticular lens

Patent metadata

Field	Value
Publication number	US-12598283-B2
Application number	US-202418812391-A
Country	US
Kind code	B2
Filing date	Aug 22, 2024
Priority date	Jun 29, 2023
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

A method performed by a display device including a lenticular lens is provided. The method includes obtaining, by the display device, a target image, identifying, by the display device, a predefined slanted angle of the lenticular lens, identifying, by the display device, in the target image, at least one area including at least one edge having a slanted angle of which similarity to the slanted angle of the lenticular lens is within a preset range, selecting, by the display device, a plurality of sub-pixels of a same row as a first sub-pixel included in the identified at least one area, and allocating, by the display device, a first combination value to an output value of each of the plurality of sub-pixels, the first combination value being obtained by combining values of the plurality of sub-pixels.

First claim

What is claimed is:

1 . A method performed by a display device comprising a lenticular lens, the method comprising:
obtaining, by the display device, a target image; identifying, by the display device, a predefined first slanted angle at which the lenticular lens is slanted with respect to a display axis; identifying, by the display device, at least one area in the target image, which comprises at least one edge within the target image, which is slanted with respect to the display axis at a second slanted angle that is within a preset range from the first slanted angle; selecting, by the display device, a plurality of sub-pixels of a same row as a first sub-pixel comprised in the identified at least one area; and allocating, by the display device, a first combination value to an output value of each of the plurality of sub-pixels, the first combination value being obtained by combining values of the plurality of sub-pixels.

2 . The method of claim 1 , further comprising:
identifying a predefined pitch of the lenticular lens, wherein the selecting of the plurality of sub-pixels of the same row as the first sub-pixel comprised in the identified at least one area comprises:
selecting the plurality of sub-pixels of the same row as the first sub-pixel within a pitch section comprising the first sub-pixel from among a plurality of pitch sections of the lenticular lens, and
wherein the plurality of pitch sections of the lenticular lens are determined based on the first slanted angle and the predefined pitch of the lenticular lens.

3 . The method of claim 1 , wherein the allocating of the first combination value to the output value of each of the plurality of sub-pixels, the first combination value being obtained by combining values of the plurality of sub-pixels, comprises obtaining, as the first combination value, a value of at least one of an average, a weighted sum, or a weighted average of the values of the plurality of sub-pixels.

4 . The method of claim 1 , wherein the identifying of the at least one area in the target image, which comprises the at least one edge within the target image, which is slanted with respect to the display axis at the second slanted angle that is within the preset range from the first slanted angle, comprises:
obtaining an edge image corresponding to the target image by detecting one or more edges from a gray scale image corresponding to the target image; generating a first mask image indicating the at least one area which comprises the at least one edge which is slanted with respect to the display axis at the second slanted angle, from the edge image, based on the first slanted angle; and identifying, by applying the first mask image to the target image, the at least one area in the target image, which comprises the at least one edge within the target image, which is slanted with respect to the display axis at the second slanted angle.

5 . The method of claim 1 , further comprising:
identifying an area of at least one line having a thickness equal to or less than a preset thickness in the target image; selecting a first sub-pixel set comprising a plurality of sub-pixels of a same column as a second sub-pixel comprised in the identified area of the at least one line; allocating a second combination value to an output value of the second sub-pixel, the second combination value being obtained by combining values of the plurality of sub-pixels comprised in the first sub-pixel set; selecting a second sub-pixel set comprising a plurality of sub-pixels of a same column as the second sub-pixel; and allocating a third combination value to an output value of a third sub-pixel comprised in the second sub-pixel set, the third combination value being obtained by combining values of the plurality of sub-pixels comprised in the second sub-pixel set.

6 . The method of claim 5 ,
wherein the selecting of the first sub-pixel set comprises selecting the first sub-pixel set within a pitch section comprising the second sub-pixel from among a plurality of pitch sections of the lenticular lens, and wherein the selecting of the second sub-pixel set comprises selecting the second sub-pixel set within the pitch section comprising the second sub-pixel.

7 . The method of claim 5 , wherein the first sub-pixel set is different from the second sub-pixel set.

8 . The method of claim 5 ,
wherein the plurality of sub-pixels comprised in the first sub-pixel set are sequentially arranged in a vertical direction with respect to the second sub-pixel in the target image, and wherein the plurality of sub-pixels comprised in the second sub-pixel set are sequentially arranged in a vertical direction with respect to the third sub-pixel in the target image.

9 . The method of claim 5 , wherein the identifying of the area of the at least one line having the thickness equal to or less than the preset thickness in the target image comprises:
generating a second mask image indicating the area of the at least one line having the thickness equal to or less than the preset thickness from a gray scale image corresponding to the target image; and identifying, by applying the second mask image to the target image, the area of the at least one line having the thickness equal to or less than the preset thickness in the target image.

10 . The method of claim 9 , wherein the generating of the second mask image indicating the area of the at least one line having the thickness equal to or less than the preset thickness from the gray scale image corresponding to the target image comprises:
obtaining a first image indicating a white area of the target image by enhancing brightness contrast and removing an area having a value less than a reference in the gray scale image; obtaining a second image in which the area of the at least one line having the thickness equal to or less than the preset thickness is removed from the white area of the target image, by performing a predefined morphological operation on the first image; and generating the second mask image by performing calculation to subtract the second image from the first image.

11 . The method of claim 9 , wherein the at least one line having the thickness equal to or less than the preset thickness includes a line whose width value is equal to or less than a preset value.

12 . The method of claim 9 , wherein the at least one line having thickness equal to or less than the preset thickness further includes a line in which a number of pixels included in a width of the line is equal to or less than a preset number, or a line in which a pixel-unit width value is equal to or less than a preset pixel-unit width value.

13 . The method of claim 9 , wherein the preset thickness is determined to be an absolute value or a relative value.

14 . One or more non-transitory computer-readable storage media storing one or more computer programs including computer-executable instructions that, when executed by one or more processors of a display device individually or collectively, cause the display device to perform operations, the operations comprising:
obtaining, by the display device, a target image; identifying, by the display device, a predefined first slanted angle at which a lenticular lens of the display device is slanted with respect to a display axis; identifying, by the display device, at least one area in the target image, which comprises at least one edge within the target image, which is slanted with respect to the display axis at a second slanted angle that is within a preset range from the first slanted angle; selecting, by the display device, a plurality of

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lim Kyungmin
• Lee Jonghoon
• Kim Daeyeong

Classifications

• G09G3/003 Primary

  to produce spatial visual effects · CPC title

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title

• H04N13/305 Primary

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

• H04N13/317

  using slanted parallax optics · CPC title