HDR Graphic Overlay Brightness Limiting
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Solution Overview
Problem
Existing display apparatuses struggle to maintain the visibility of graphic images when combined with high-dynamic range (HDR) images due to increased brightness in the periphery, leading to glare and reduced visibility.
Innovation Solution
An image processing apparatus and method that generates a combined image by limiting the brightness of graphic images and their periphery to a threshold, using a generating unit and an outputting unit to produce a brightness-limited image, and a display apparatus with a light-emitting unit that controls emission brightness to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a graphic image with a narrower dynamic range is combined on an HDR image, then the graphic image can be displayed on existing monitors, but the brightness of the periphery of the graphic image is inadvertently increased causing glare and reduced visibility
Solution Approach 1:
The patent applies local quality by differentiating the brightness treatment between the graphic image region and its periphery. The brightness of the periphery region is specifically limited to prevent glare, while the graphic image region maintains its original brightness characteristics. This localized approach allows the graphic image to remain visible and functional while eliminating the harmful glare effect in the periphery area.
Solution Approach 2:
The patent changes the brightness parameter of the periphery region by limiting it to a specific threshold value. This parameter modification transforms the periphery from a glare-causing high-brightness area to a controlled-brightness area that does not interfere with graphic image visibility, while preserving the overall HDR image quality.
2Ease of operation
If weighted composition is used to combine graphic image and HDR image, then transparency control is achieved, but high-brightness pixel values are produced causing dazzle and visibility decline
Solution Approach 1:
The patent applies local quality by selectively treating different regions of the combined image. The periphery region undergoes brightness limiting to prevent dazzle, while the graphic image region maintains its weighted composition characteristics for proper transparency control. This regional differentiation resolves the contradiction between transparency control and dazzle prevention.
Solution Approach 2:
The patent applies preliminary anti-action by proactively limiting the brightness of the periphery region before it can cause dazzle. This preventive measure counteracts the potential harmful effect of high-brightness pixel values that would otherwise be produced by weighted composition, ensuring visibility is maintained throughout the combined image.
Data Source
AI summary
An image processing apparatus according to the present invention includes: a generating unit configured to generate a combined image in which a graphic image is combined on a non-combined image; and an outputting unit configured to output the combined image, wherein when generating a combined image in which a graphic image with a narrower dynamic range than the non-combined image is combined on the non-combined image, the generating unit generates a combined image in which brightness of at least one region among a region of the graphic image and a region of a periphery thereof is limited to a first threshold or lower.