Gradation Correcting Apparatus for Arbitrary Image Segment Luminance Adjustment
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Solution Overview
Problem
Conventional image processing systems require repetitive and cumbersome operations to adjust the brightness of entire object areas in images, and are limited in their ability to correct luminance levels of areas other than pre-determined regions.
Innovation Solution
An image processing apparatus with a gradation correcting unit, object segment setting unit, object segment selecting unit, and gradation altering characteristic changing unit allows users to set and select multiple object segments in an image for simultaneous luminance adjustments through a single operation, enabling easy alteration of luminance levels across arbitrary areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional gradation correcting functions are used to adjust brightness of arbitrary areas, then luminance levels can be corrected, but multiple repetitive operations are required to correct the whole area of a main object
Solution Approach 1:
The image is automatically divided into multiple object segments based on detected object boundaries. Each segment can be independently selected and adjusted, allowing the system to handle different areas of the image as separate units while maintaining the ability to process the entire image through systematic selection of these segments.
Solution Approach 2:
The system performs preliminary detection and segmentation of objects in the image before the user makes adjustments. By pre-identifying object boundaries and creating selectable segments, the system prepares the image structure in advance, eliminating the need for users to manually define adjustment areas and reducing repetitive operations.
2Ease of operation
If the area for luminance adjustment is previously determined, then the adjustment process is simplified, but areas other than the pre-determined area cannot be corrected
Solution Approach 1:
The system dynamically allows users to switch between different selection modes: selecting individual object segments, selecting multiple segments, or selecting the entire image. This dynamic adaptability enables the interface to adjust to different user needs while maintaining operational simplicity through consistent interaction patterns.
Solution Approach 2:
The single operation mechanism serves multiple functions: it can select a single object segment, select multiple segments simultaneously, or select the entire image depending on user input. This multi-functional capability allows the same basic operation to adapt to different correction scenarios, providing both simplicity and versatility.
3Adaptability or versatility
If multiple object segments are set for luminance adjustment, then arbitrary areas can be corrected, but the device complexity increases
Solution Approach 1:
The system automatically performs object detection and segmentation without requiring user intervention. The automatic segmentation algorithm independently identifies object boundaries and creates selectable segments, eliminating the need for complex user interfaces for manual area definition and reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The object segments serve as intermediaries between the raw image and the luminance adjustment process. By introducing these segmented regions as an intermediate layer, the system simplifies the adjustment mechanism while enabling flexible area selection, as users only need to interact with pre-defined segments rather than directly manipulating pixel-level parameters.
4Manufacturing precision
If users touch the through image several times to designate the whole area of the main object, then the brightness level can be corrected, but the operation becomes troublesome and time-consuming
Solution Approach 1:
The system performs preliminary detection and segmentation of the main object into selectable segments before the user makes adjustments. By pre-identifying the object boundaries and creating a structure of selectable segments, the system allows users to correct the entire object area through a single operation rather than multiple repetitive touches, significantly reducing correction time while maintaining accuracy.
Data Source
AI summary
Plural areas defined by contours in a through image (live view image) are previously set as object segments whose luminance levels are to be altered. When a user touches a point within an object segment seen in the through image displayed on a touch panel LCD 12, a gamma curve is changed to alter a luminance level of the object segment including the touched point. This arrangement allows the user to make more bright the whole of the object segment simply by touching a point within the object segment, and also to select any segment of an object as the object segment whose luminance level is to be altered.