Luminance Distribution Graph for HDR Video Analysis
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Solution Overview
Problem
Users find it difficult to intuitively recognize the luminance distribution and its changes over a long period in high dynamic range (HDR) image data, as existing techniques mainly focus on short-term changes and do not effectively display the number of pixels at each luminance level across a prolonged time frame.
Innovation Solution
An information processing apparatus and method that acquires luminance information for each pixel at each time position in a moving image and generates a graph with a time axis and a luminance axis, indicating the presence or number of corresponding pixels at each coordinate, allowing for the visualization of luminance distribution changes over a long period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional graph methods (showing only peak and average luminance) are used, then the display is simple and easy to understand, but the user cannot recognize the luminance distribution and its changes over a long period
Solution Approach 1:
The patent adds a third dimension to the graph by incorporating the number of pixels at each luminance level. The graph now has the time axis (horizontal), luminance level axis (vertical), and pixel count representation (through color intensity or additional visual encoding). This dimensional addition allows users to visualize luminance distribution changes over long periods without overwhelming complexity.
Solution Approach 2:
The patent uses color intensity or color changes to represent the number of pixels at each luminance level. Different colors or shades indicate different pixel counts, allowing users to intuitively grasp the distribution of luminance values across frames without requiring complex numerical displays or multiple separate graphs.
2Loss of information
If detailed luminance distribution data for each frame is displayed, then complete information is provided, but the user cannot easily recognize the time change of luminance distribution over long periods
Solution Approach 1:
The patent merges multiple pieces of information into a single integrated graph display. It combines time progression, luminance level distribution, and pixel count data into one visual representation. This merging allows users to perceive temporal changes in luminance distribution at a glance without needing to analyze multiple separate data sets or perform mental synthesis.
Solution Approach 2:
By using color intensity or color variations to encode pixel count information at different luminance levels across time, the patent enables intuitive visual recognition. Users can quickly perceive how luminance distribution evolves over long periods through color patterns rather than having to interpret numerical data or complex graphical elements.
Data Source
AI summary
An information processing apparatus according to the present invention includes at least one memory and at least one processor which function as: an acquisition unit configured to acquire information on a luminance level of each pixel at each time position of a moving image; and a generation unit configured to generate, based on the information, a graph that includes a first axis which indicates the time position and a second axis which intersects with the first axis and indicates the luminance level, and indicates the presence/absence of corresponding pixels or a number of corresponding pixels in each coordinate.