Real-Time Depth Map Working Range Verification in Imaging Systems
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Solution Overview
Problem
Conventional depth map acquisition methods, such as DFD, DFF, and stereo, do not allow for real-time checking of the working range during shooting, making it impossible for photographers to verify if the desired image processing effect can be achieved until after shooting.
Innovation Solution
An imaging apparatus equipped with an image acquisition unit, depth map acquisition unit, working range map generation unit, synthesizing unit, and display unit, which generates and displays a working range map in real-time, allowing photographers to check and adjust the depth map range before shooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a depth map is acquired using conventional methods (DFD, DFF, or stereo), then a depth map can be obtained for image processing, but the working range of the depth map cannot be checked during shooting
Solution Approach 1:
The patent generates and displays a working range map before actual shooting to allow photographers to check and adjust the depth map range in advance. This preliminary action prevents the need for post-shooting verification, resolving the contradiction by providing working range information beforehand without losing time after shooting.
Solution Approach 2:
The patent introduces a working range map as an intermediary visual element that mediates between the depth map acquisition process and the photographer's decision-making. This working range map provides real-time feedback about the measurable depth range, allowing photographers to adjust parameters before shooting without losing critical information.
2Area of stationary object
If parameter settings are adjusted to expand the depth map working range, then more of the scene can be captured, but the precision of depth measurement may be reduced
Solution Approach 1:
The patent enables dynamic adjustment of shooting parameters (such as focus bracketing range in DFD or baseline distance in stereo) based on the desired working range. The system allows photographers to flexibly adjust parameters before shooting to optimize the balance between working range and measurement precision for different shooting scenarios.
Solution Approach 2:
The patent involves changing shooting parameters (focus bracketing amount, aperture, baseline distance) to control the working range of the depth map. By providing a working range map, photographers can make informed parameter changes to achieve the desired balance between coverage area and measurement precision.
3Reliability
If multiple shots are taken to ensure adequate depth map coverage, then the desired effect can be achieved, but the shooting efficiency is reduced
Solution Approach 1:
The working range map is generated and displayed before shooting to allow photographers to verify adequate depth map coverage in advance. This eliminates the need for multiple test shots, improving shooting efficiency while maintaining reliability of depth map coverage.
Data Source
AI summary
An imaging apparatus comprising: an image acquisition unit configured to acquire an image; a depth map acquisition unit configured to acquire a first depth map; a working range map generation unit configured to generate a working range map showing a working range in the image on the basis of the first depth map; a synthesizing unit configured to synthesize the image and the working range map and to generate a synthesized image; and a display unit configured to display the synthesized image.