Image Processing Apparatus Histogram Clipping Range Determination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
When displaying a captured image on multiple screens with different configurations, it is challenging to accurately determine the clipped ranges for image capturing, leading to interference with appropriate white balance and exposure settings, as the distribution information of pixel values does not correspond to the display ranges.
Innovation Solution
An image processing apparatus that acquires configuration information of the display system, determines the clipped ranges, and superimposes distribution information of pixel values onto the image, allowing for accurate adjustment of image capturing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If histogram is superimposed on the entire image capturing signal, then distribution information is provided, but the distribution information does not correspond to the actual display range when clipping or geometrical conversion is performed
Solution Approach 1:
The patent segments the image capturing signal into multiple regions corresponding to different display areas on the display apparatus. Each region's pixel value distribution is calculated separately and displayed independently, ensuring that the histogram accurately represents only the pixels that will be displayed. This resolves the contradiction by dividing the processing task into manageable segments that match the display geometry.
Solution Approach 2:
The patent performs preliminary calculation of the display range and corresponding pixel regions before generating the histogram. By determining which pixels will be displayed and calculating their distribution in advance, the system ensures accurate distribution information is provided without requiring complex real-time adjustments during display.
2Measurement precision
If the entire image capturing signal is used for histogram calculation, then complete distribution information is obtained, but it cannot accurately represent clipped or geometrically converted display ranges
Solution Approach 1:
The patent divides the image capturing signal into multiple segments corresponding to different display regions. By calculating histograms for each segment separately rather than processing the entire image, the system achieves precise measurement of pixel value distribution for the actual display area while reducing overall processing time through parallel or sequential segment handling.
Solution Approach 2:
The patent applies local quality by calculating pixel value distribution specifically for the regions that will be displayed, rather than uniformly processing the entire image. This focused approach improves measurement precision for the relevant areas while avoiding unnecessary computation on pixels that will not be displayed.
3Reliability
If distribution information is not provided for clipped ranges, then white balance and exposure settings may be inappropriate, but providing accurate distribution information requires complex range determination
Solution Approach 1:
The patent performs preliminary determination of the display range and corresponding pixel regions before generating distribution information. By calculating which pixels will be displayed and determining their distribution in advance, the system provides reliable basis for white balance and exposure settings without requiring complex real-time analysis during the imaging process.
Solution Approach 2:
The patent provides distribution information as feedback to the user, enabling them to adjust white balance and exposure settings based on the actual pixel value distribution that will be displayed. This feedback mechanism improves reliability by allowing iterative adjustment until the desired image quality is achieved.
Data Source
AI summary
To provide an image capturing apparatus with distribution information on an image capturing signal suitable for a display apparatus, an image processing apparatus includes: an image data acquisition unit configured to acquire image data; a configuration information acquisition unit configured to acquire configuration information on a display apparatus which displays at least a part of an image indicated by the image data; a range determination unit configured to determine a range corresponding to the part of the image based on the configuration information; and a display control unit configured to cause a display unit to display the image with distribution information of pixel values corresponding to the range of the image.