Image Processing Apparatus for Lecture Recording Focus Clarity
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Solution Overview
Problem
Existing lecture recording systems often fail to maintain clear focus on both the lecturer and the projected material, leading to degraded image quality due to geometric corrections and noise in projected images.
Innovation Solution
An image processing apparatus that captures both the display area and the lecturer, uses process information to combine content image data with the captured image, and performs alpha blending to produce a composite video, ensuring clear visibility and natural color tone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera focuses on the lecturer's face, then the lecturer is clearly recorded, but the displayed material may not come into focus
Solution Approach 1:
The patent segments the recording system into two independent image sources: a camera capturing the lecturer and a separate display capturing the projected material. This segmentation allows each component to be optimized independently for its specific function, resolving the focus conflict between lecturer and material
Solution Approach 2:
The patent introduces an intermediary processing system that combines the lecturer image and material image through image synthesis. This intermediary layer reconciles the two separate capture paths and produces a unified output that maintains clarity for both elements
2Shape
If geometric correction is performed on projected images, then deformation is eliminated, but image quality is degraded
Solution Approach 1:
The patent performs geometric correction preliminarily during the image processing stage rather than during projection. The displayed image data is pre-processed with geometric correction applied, and then this corrected data is used to generate the material image. This preliminary action prevents quality degradation that would occur with post-projection correction
Solution Approach 2:
The patent creates a digital copy of the displayed image data and processes this copy independently. By working with a digital replica rather than the physical projected light, geometric corrections can be applied to the data without degrading the actual projection quality
Data Source
AI summary
An image processing apparatus comprises a hardware processor. The hardware processor is configured to acquire a captured image of an area that includes a display area in which content is displayed by a display device and a peripheral area of the display area; acquire a content image data corresponding to the content; specify a display area in the captured image; produce process information based on the captured image; and perform image processing that includes combining an image based on the content image data with the display area of the captured image by using the process information.