Apparatus and method for processing light field data using a mask with an attenuation pattern
First Claim
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1. An apparatus for processing a light field image, the apparatus comprising:
- a lens;
a mask configured to spatially modulate four-dimensional (4D) light field data of a scene passing through the lens such that the spatially modulated 4D light field data includes wideband information of the scene, the mask comprisinga transparent layer, anda metal layer disposed on the transparent layer, the metal layer comprisingan attenuation pattern configured to attenuate light passing through the transparent layer;
a sensor configured to detect a two-dimensional (2D) image corresponding to the spatially modulated 4D light field data; and
a data processing unit configured to recover the 4D light field data from the 2D image, generate a high-resolution depth map based on the 4D light field data, and generate an all-in-focus image based on the 2D image and the high-resolution depth map,wherein the attenuation pattern comprises unit patterns, each unit pattern comprises a 7×
7 pixel structure, and each region in the second and fourth rows and second and fourth columns of the unit patterns are configured to intercept light.
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Abstract
Provided are an apparatus and method for processing a light field image that is acquired and processed using a mask to spatially modulate a light field. The apparatus includes a lens, a mask to spatially modulate 4D light field data of a scene passing through the lens to include wideband information on the scene, a sensor to detect a 2D image corresponding to the spatially modulated 4D light field data, and a data processing unit to recover the 4D light field data from the 2D image to generate an all-in-focus image.
25 Citations
13 Claims
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1. An apparatus for processing a light field image, the apparatus comprising:
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a lens; a mask configured to spatially modulate four-dimensional (4D) light field data of a scene passing through the lens such that the spatially modulated 4D light field data includes wideband information of the scene, the mask comprising a transparent layer, and a metal layer disposed on the transparent layer, the metal layer comprising an attenuation pattern configured to attenuate light passing through the transparent layer; a sensor configured to detect a two-dimensional (2D) image corresponding to the spatially modulated 4D light field data; and a data processing unit configured to recover the 4D light field data from the 2D image, generate a high-resolution depth map based on the 4D light field data, and generate an all-in-focus image based on the 2D image and the high-resolution depth map, wherein the attenuation pattern comprises unit patterns, each unit pattern comprises a 7×
7 pixel structure, and each region in the second and fourth rows and second and fourth columns of the unit patterns are configured to intercept light. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of processing a light field image, the method comprising:
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detecting a two-dimensional (2D) image corresponding to four-dimensional (4D) light field data that is spatially modulated to include wideband information of a scene, using a mask configured to spatially modulate the 4D light field data of the scene and a sensor; recovering the 4D light field data from the 2D image; generating a high-resolution depth map based on 4D light field data; and generating an all-in-focus image using the 2D image and the high-resolution depth map, wherein the mask comprises a transparent layer and a metal layer disposed on the transparent layer, the metal layer comprising an attenuation pattern configured to attenuate the light passing through the transparent layer, and the attenuation pattern comprises unit patterns, each unit pattern comprises a 7×
7 pixel structure, and each region in the second and fourth rows and second and fourth columns of the unit patterns are configured to intercept light. - View Dependent Claims (9, 10, 11, 12)
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13. An attenuation mask of an imaging apparatus, the attenuation mask comprising:
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a transparent layer; and a metal layer disposed on the transparent layer, wherein the attenuation mask is configured to spatially modulates four-dimensional (4D) acquired light field data such that the spatially modulated data includes wideband image information of a scene, the metal layer comprising an attenuation pattern configured to attenuate light passing through the transparent layer, and the attenuation pattern comprises unit patterns, each unit pattern comprises a 7×
7 pixel structure, and each region in the second and fourth rows and second and fourth columns of the unit patterns are configured to intercept light.
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Specification