Dynamic White Point Adjustment for Multi-Light Source Imaging
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Solution Overview
Problem
Conventional imaging methods struggle with smooth white point transitions and color adjustments when dealing with multiple light sources in an image, leading to discontinuous and unfavorable image pickup, especially when attempting to change zoom and focus settings.
Innovation Solution
An imaging method and apparatus that manually or automatically determine and store white points and color adjustment settings, allowing for smooth transitions between these points, enabling continuous white balance and color adjustment across varying light sources, and facilitating simultaneous zoom and focus changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If auto white balance function is used to make white point correspond with a light source, then white balance adjustment is automated, but when multiple light sources are present, the white point can only correspond with one particular light source, resulting in unfavorable image pickup
Solution Approach 1:
The patent implements dynamic white point adjustment by storing multiple white point information corresponding to different light sources and transitioning between them based on detected light source positions. The white point is no longer fixed but dynamically adapts to follow the detected light source, enabling smooth transitions between different lighting conditions in the scene.
Solution Approach 2:
The patent performs preliminary action by storing white point information for multiple light sources in advance before actual imaging occurs. This pre-stored information is then retrieved and applied when imaging, allowing the system to handle multiple light sources without requiring real-time complex calculations during the actual image capture.
2Measurement precision
If white point is manually adjusted between objects with different light sources, then white balance can be optimized for each object, but the transition becomes discontinuous and lacks smoothness
Solution Approach 1:
The patent ensures continuity of useful action by implementing smooth transition processing between different white points. Instead of abrupt switching, the system performs continuous interpolation and blending during the transition period, maintaining smooth visual appearance while accurately adjusting the white point to match different light sources in the scene.
Solution Approach 2:
The patent introduces intermediary processing during white point transitions. A transition control mechanism acts as an intermediary between the stored white point information and the actual white point application, smoothing out the transition through controlled interpolation and blending operations to eliminate discontinuities.
3Device complexity
If transition between two points is executed at a fixed rate, then the transition process is simple, but it is difficult to perform effective operations such as terminating the transition as the transition rate is smoothly reduced immediately before the end
Solution Approach 1:
The patent implements dynamic transition rate adjustment where the transition speed is not fixed but varies during the transition process. The transition rate is smoothly reduced as the endpoint approaches, allowing precise termination control. This dynamic adjustment enables effective operations like pausing or terminating the transition at optimal moments without complex control mechanisms.
Data Source
AI summary
An imaging method and an imaging apparatus are provided in which information about white points determined is stored and operation is performed only between the stored white points.The imaging method includes the steps of: automatically or manually determining at least two white points (Steps S1-2, S1-3 and S1-4); storing the above described at least two white points determined (Steps S5, S8 and S13); and manually or automatically adjusting a white point with the range between the above described at least two white points stored as a white point adjustment range (Step S23).