Image formats and related methods and apparatuses
First Claim
Patent Images
1. A method for displaying an image on a target display comprising:
- receiving image data at the target display, the image data comprising a predetermined image value of the image data corresponding to a predetermined mid-tone value displayed on a reference display; and
mapping the image data to the target display so that the mid-tone value when viewed on the target display matches the predetermined mid-tone value when viewed on the reference display,wherein a dynamic range of the target display differs from a dynamic range of the reference display,wherein the mapping sets a slope of a mid-tone region of a response function when viewed on the target display to match a corresponding mid-tone region of a response function of the reference display, andwherein the mapping comprises a mapping function given by;
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Abstract
Image data may be color graded, distributed and viewed on target displays. Mappings that preserve mid-range points and mid-range contrast may be applied to view the image data for color grading and to prepare the image data for display on a target display. The image data may be expanded to exploit the dynamic range of the target display without affecting mid-tone values.
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Citations
28 Claims
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1. A method for displaying an image on a target display comprising:
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receiving image data at the target display, the image data comprising a predetermined image value of the image data corresponding to a predetermined mid-tone value displayed on a reference display; and mapping the image data to the target display so that the mid-tone value when viewed on the target display matches the predetermined mid-tone value when viewed on the reference display, wherein a dynamic range of the target display differs from a dynamic range of the reference display, wherein the mapping sets a slope of a mid-tone region of a response function when viewed on the target display to match a corresponding mid-tone region of a response function of the reference display, and wherein the mapping comprises a mapping function given by; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A target display for displaying image data comprising:
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a receiver configured to receive image data, the image data comprising a predetermined image value of the image data corresponding to a predetermined mid-tone value displayed on a reference display; and a mapping unit configured to map the image data to the target display so that the mid-tone value when viewed on the target display matches the predetermined mid-tone value when viewed on the reference display, wherein a dynamic range of the target display differs from a dynamic range of the reference display, wherein the mapping unit sets a slope of a mid-tone region of a response function when viewed on the target display to match a corresponding mid-tone region of a response function of the reference display, and wherein the mapping comprises a mapping function given by; - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification