Image Processing Apparatus Optical Zoom Scale Transformation
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Solution Overview
Problem
When a subject is scaled up using digital zoom followed by optical zoom, the resolution of the foreground image in a synthesis image is lowered, leading to a deteriorated image quality.
Innovation Solution
An image processing apparatus that performs scale transformation using optical zoom to maintain the resolution of the actual image in the synthesis image, by adjusting the scale transformation to prevent image clipping and using a scale transformation adjustment unit to determine the optimal optical scale component, ensuring that the optical zoom does not cause resolution deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If digital zoom is used to scale up the subject, then the scaling operation can be performed quickly, but the resolution of the foreground image is lowered
Solution Approach 1:
The patent divides the scaling operation into two distinct segments: optical zoom scaling (which maintains resolution) and digital zoom scaling (which provides additional magnification). By segmenting the scaling function between these two methods, the system achieves both high resolution and scaling capability, resolving the contradiction between speed and resolution.
2Measurement precision
If optical zoom is used to scale up the subject, then the resolution is maintained, but image clipping may occur and the scaling is slower
Solution Approach 1:
The patent dynamically adjusts the scaling parameters by calculating optimal optical scale components based on the desired zoom level and image dimensions. This dynamic adjustment allows the system to maximize optical zoom usage while preventing image clipping, providing both resolution maintenance and operational flexibility.
3Device complexity
If only one image pickup unit is used, then the device complexity is reduced, but it is difficult to achieve both high resolution and prevent image clipping
Solution Approach 1:
The patent changes the parameters of the single image pickup unit by dynamically adjusting optical scale components, zoom levels, and coordinate transformation parameters. By optimizing these parameters, the system achieves high-quality image synthesis with a single pickup unit, avoiding the need for multiple units while maintaining manufacturing precision.
Data Source
AI summary
A scale transformation adjustment unit performs a scale transformation corresponding to a change of an image range with respect to an actual image by using a scale transformation by an optical zoom of an image pickup unit that generates the actual image, and generates a coordinate transformation matrix including the scale transformation.