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Apparatus and method for measuring 3-dimensional interocular crosstalk
US9270979B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9270979-B2 |
| Application number | US-201213673718-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 9, 2012 |
| Priority date | Nov 9, 2011 |
| Publication date | Feb 23, 2016 |
| Grant date | Feb 23, 2016 |
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Abstract
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An apparatus and method for measuring 3-dimensional (3D) interocular crosstalk is disclosed. A light sensor detects luminance of a stereoscopic image displayed in a display and outputs a luminance value indicating the detected luminance. A controller calculates 3D interocular crosstalk based on a gray difference and a residual luminance ratio.
First claim
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What is claimed is: 1. An apparatus for measuring 3-dimensional (3D) interocular crosstalk, comprising: a light sensor configured to detect luminance of a stereoscopic image displayed in a display and output a luminance value indicating the detected luminance; and a controller configured to calculate 3D interocular crosstalk based on a gray difference and a residual luminance ratio, wherein the gray difference is calculated based on gray levels of a first view image and a second view image included in the stereoscopic image and the residual luminance ratio is calculated based on the luminance value. 2. The apparatus according to claim 1 , wherein the stereoscopic image is displayed in a glasses method or a non-glasses method. 3. The apparatus according to claim 1 , wherein the light sensor detects luminance of the stereoscopic image passing 3D glasses. 4. The apparatus according to claim 1 , wherein the gray difference is multiplied by the residual luminance ratio to calculate the 3D interocular crosstalk. 5. The apparatus according to claim 1 , wherein the gray difference is calculated further based on the display's Gamma (γ) value. 6. The apparatus according to claim 1 , wherein the gray difference is calculated by the following equation (1), D G 1 , G 2 = ( G 2 255 ) γ - ( G 1 255 ) γ The following equation (1) wherein, in the equation (1), G 1 is the first view image's gray level, G 2 is the second view image's gray level, D G1,G2 means the gray difference, and Γ is the display's Gamma(γ) value. 7. The apparatus according to claim 1 , wherein the residual luminance ratio is calculated by the following equation (2), R G 1 , G 2 = L G 1 , G 2 - L G 2 , G 2 L G 2 , G 1 - L G 2 , G 2 The following equation (2) wherein, in the equation (2), G 1 is the first view image's gray level, G 2 is the second view image's gray level, L G1,G2 is a luminance value indicating the luminance detected by the light sensor when the first view image is for an observed image and the second view image is for an unobserved image, L G2 , G1 is a luminance value indicating the luminance detected by the light sensor when the first view image is for an unobserved image and the second view image is for an observed image, L G2,G2 is a luminance value indicating the luminance detected by the light sensor when the stereoscopic image includes two second view images and one of the two second view images is for an observed image and another is for an unobserved image, and R G1,G2 means the residual luminance ratio. 8. The apparatus according to the claim 1 , wherein the controller calculates the 3D interocular crosstalk using the following equation (3) or the following equation (4), X LO , G
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Classifications
- H04N13/327Primary
Calibration thereof · CPC title
- H04N13/0425Primary
Electricity · mapped topic
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- What does patent US9270979B2 cover?
- An apparatus and method for measuring 3-dimensional (3D) interocular crosstalk is disclosed. A light sensor detects luminance of a stereoscopic image displayed in a display and outputs a luminance value indicating the detected luminance. A controller calculates 3D interocular crosstalk based on a gray difference and a residual luminance ratio.
- Who is the assignee on this patent?
- Lg Electronics Inc
- What technology area does this patent fall under?
- Primary CPC classification H04N13/327. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 23 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).