Image Brightness Compensation via Dynamic Region Analysis
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Solution Overview
Problem
Existing image capturing devices face challenges in accurately compensating the brightness of main objects within images, especially when the object's position changes, as they often rely on predefined areas that may include other objects, leading to inadequate exposure and unnatural image brightness.
Innovation Solution
A system that divides images into regions based on brightness distribution, allowing for variable setting of the main area to accurately identify and compensate the main object's brightness, using a brightness distribution calculation unit and compensation unit to perform weighted sum adjustments across valid divided regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a predefined main area is used for brightness compensation, then the compensation process is simplified, but the accuracy of main object brightness compensation deteriorates when the object position changes
Solution Approach 1:
The patent applies the dynamics principle by making the main area variable instead of fixed. The compensation unit dynamically adjusts the main area based on the detected position of the main object in the image. This allows the system to maintain simple processing while achieving accurate brightness compensation regardless of object position, as the main area adapts to the actual object location rather than relying on predetermined coordinates
Solution Approach 2:
The patent changes the parameter of the main area from a fixed predefined value to a variable determined by brightness distribution analysis. The system analyzes the brightness characteristics of different regions and identifies the main area based on these parameters, allowing the main area to be dynamically adjusted according to the actual image content and object position, thereby resolving the contradiction between simplicity and accuracy
2Reliability
If different weights are assigned to main area and sub-areas, then brightness compensation is improved, but the system cannot adapt when the main object position changes
Solution Approach 1:
The system dynamically determines the main area based on brightness distribution rather than using a fixed predefined area. By analyzing the brightness characteristics of divided regions and identifying which region contains the main object, the system can adaptively adjust the main area location and apply appropriate weights, thereby maintaining reliable brightness compensation across different object positions
Solution Approach 2:
The patent applies local quality by assigning different weights to different areas (main area vs. sub-areas) based on their local brightness characteristics and object content. The compensation unit identifies the specific region containing the main object and applies targeted weight adjustments to that local area, enabling adaptive brightness compensation that responds to local image conditions rather than applying uniform processing
Data Source
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AI summary
A system, medium, and method compensating brightness of an image, by compensating the brightness of a main object included in the image. The system includes a brightness distribution calculation unit dividing the obtained image into a plurality of divided regions and calculating the brightness distribution of each divided region, and a compensation unit determining a main region including a main object in the obtained image according to the calculated brightness distribution and compensating the obtained image according to the determination result.