Image Processing Apparatus Luminance Range Confirmation
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Solution Overview
Problem
Existing image processing techniques fail to easily confirm the luminance range of a shot image, specifically the relationship between maximum, minimum, and average luminance values, in High Dynamic Range (HDR) images, making it difficult for users to adjust exposure settings effectively.
Innovation Solution
An image processing apparatus and method that detects pixel values to generate images indicating frequency distributions, superimposing maximum, minimum, and average values onto the original image, allowing users to visually confirm and adjust these values during shooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a WFM image is displayed to show frequency distribution of luminance values, then the relationship between maximum, minimum, and average luminance values can be confirmed, but the display unit becomes more complex and the image processing becomes more difficult
Solution Approach 1:
The patent embeds the WFM image (frequency distribution display) within the corner region of the shot image display area. This nesting approach allows the WFM information to be displayed without occupying the entire display area, thus avoiding excessive complexity while still providing accurate luminance range confirmation. The WFM image is nested in a predetermined region (e.g., bottom right corner) of the shot image.
Solution Approach 2:
The patent transitions from displaying only the shot image in two dimensions to adding a third dimension by superimposing the WFM image in a separate spatial region. This dimensional separation allows both the shot image and luminance frequency distribution to be displayed simultaneously without interfering with each other, achieving precise measurement while managing display complexity through spatial organization.
2Ease of operation
If additional information such as maximum and minimum luminance values is displayed on the WFM image, then the luminance range can be confirmed more easily, but the WFM image becomes harder to read and the display becomes more complex
Solution Approach 1:
The patent applies local quality by displaying different types of information in different regions: the shot image occupies the main display area while the WFM image with additional luminance information (maximum, minimum, average values) is displayed in a separate corner region. This spatial separation ensures that the WFM image remains readable while still providing comprehensive luminance information for easy adjustment.
3Area of stationary object
If the WFM image is displayed in a small region, then the shot image can be displayed in full, but the luminance range information becomes harder to confirm
Solution Approach 1:
The patent nests the WFM image in a predetermined corner region of the shot image display area, allowing both the full shot image and luminance range information to coexist. This nesting strategy preserves the full display area for the shot image while providing sufficient space in the corner region for the WFM image and its additional information to be readable and confirmable.
Data Source
AI summary
An image processing apparatus that inputs an image, detects a pixel value of each pixel of an input image and obtain at least one of a maximum value, a minimum value, and an average value of pixel values for each of predetermined sections of the input image, generates a first image indicating a frequency of pixel values of the input image, where a position of a pixel and a pixel value are associated, generates a second image in which additional information including at least one of the maximum value, the minimum value, and the average value is superimposed on the first image, and superimposes the second image on the input image and display the result.