Light-Painting Video Capture in Bright Environments
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Solution Overview
Problem
Conventional photography technologies cannot perform light-painting photography in bright environments, as they are limited to dark environments, and lack the capability to capture dynamic videos of the creation process, leading to user experience deterioration and unmet demands for versatile light-painting creation.
Innovation Solution
A shooting method and apparatus that successively collect images, identify and extract the light-painting area using pre-stored features, superpose it on a basic image, and encode composite images to generate a video file, allowing for light-painting video capture in bright environments by isolating the light-painting trail from other bright spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional light-painting photography is performed in a bright shooting environment, then the availability and versatility of light-painting creation is improved, but the image quality deteriorates due to pollution from other bright spots
Solution Approach 1:
The patent extracts only the light-painting bright spots from the image by identifying them through feature matching (comparing with pre-stored light-painting features) and selectively superimposing them, while excluding other bright spots that would cause pollution. This extraction process enables clear light-painting trails even in bright environments.
Solution Approach 2:
The patent applies different processing treatments to different regions of the image: light-painting bright spots are extracted and superimposed with high precision, while other regions are suppressed or excluded. This local differentiation ensures that only relevant light-painting information is preserved while eliminating unwanted bright spots.
2Loss of information
If conventional shooting apparatus performs light-painting photography, then static images can be obtained, but the capability to capture dynamic creation process is lost
Solution Approach 1:
The patent performs preliminary actions by continuously capturing images at fixed time intervals during the light-painting creation process, and pre-processing them through feature matching and selective superimposition. This prepares the data in advance for final video compilation, preserving the dynamic creation process without requiring complex real-time processing.
Solution Approach 2:
The patent transforms the static light-painting photography into a dynamic video by compiling a sequence of processed images into a video file. This dynamic representation captures the evolution of the light-painting creation process over time, allowing users to observe the artistic process rather than just the final result.
3Ease of manufacture
If digital shooting apparatus simulates long-term exposure through image superimposition, then expensive photosensitive hardware is avoided, but the ability to shoot in bright environments is compromised
Solution Approach 1:
The patent replaces the mechanical/optical long-term exposure system (photosensitive hardware) with a digital processing system that captures multiple images and superimposes them through image processing algorithms. This substitution enables long-term exposure simulation using standard digital camera sensors, making the technology accessible to consumer devices.
Solution Approach 2:
The patent changes the processing parameters by selectively superimposing only the light-painting bright spots (identified through feature matching) rather than all bright spots. This parameter change in the superimposition process enables bright environment shooting by excluding distracting bright spots while preserving the light-painting effect.
Data Source
AI summary
A shooting method, a shooting device and a computer storage medium. The shooting method comprises: continuously collecting images; reading the collected images and identifying a light painting region in the currently read image; extracting the light painting region and superposing the light painting region on a foundation image at a corresponding position to perform image synthesis and generate a synthesized image, and using the synthesized image as the foundation image for the next time of image synthesis; capturing the synthesized image and performing coding processing on the captured synthesized image; and converting image data after the coding processing into video file after the shooting is completed.