Dual-Camera Light Painting Photography for Adjustable Motion Paths
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Solution Overview
Problem
Current light painting cameras consume excessive power and generate significant heat during shooting, and their motion trajectories of light cannot be effectively adjusted, leading to poor operability and the need for repeated shooting.
Innovation Solution
Utilize a first camera for capturing a background picture and a second camera, such as a DVS, to separately capture the motion trajectory of a target moving object, allowing for user-defined adjustments and reducing power consumption by minimizing frame capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light painting camera captures multiple frames continuously to obtain motion trajectory, then the motion trajectory can be extracted, but power consumption increases and heat generation becomes severe
Solution Approach 1:
The patent divides the imaging task into two separate cameras: a first camera captures the background picture while a second camera (such as DVS) captures the motion trajectory of the luminous object. This segmentation allows each camera to perform its specific function efficiently, with the second camera only activating when motion is detected, thereby reducing overall power consumption while maintaining accurate motion trajectory extraction.
2Adaptability or versatility
If a light painting camera uses traditional frame-based capture, then the background and motion trajectory are captured together, but the motion trajectory cannot be adjusted independently requiring repeated shooting
Solution Approach 1:
The patent separates the capture of background (first camera) and motion trajectory (second camera) into independent channels. This allows post-processing adjustment of the motion trajectory independently from the background, providing adaptability without requiring repeated shooting. The user can modify trajectory parameters after capture while keeping the background intact.
Solution Approach 2:
The patent creates a separate representation of the motion trajectory through the second camera's specialized capture mechanism. This copied motion information can be independently manipulated and adjusted without affecting the original background capture, enabling flexible post-processing modifications.
3Loss of information
If a light painting camera captures full frames continuously, then complete scene information is obtained, but the quantity of captured frames increases power consumption
Solution Approach 1:
The patent segments the imaging function so that the first camera captures the complete background scene while the second camera specifically targets motion trajectory information. This segmentation ensures complete scene information is preserved in the background capture while the second camera's event-driven operation significantly reduces the quantity of frames captured, thereby lowering power consumption.
Solution Approach 2:
The patent extracts only the essential motion trajectory information using the second camera's event-driven approach, which captures only when changes occur rather than continuously. This extraction method maintains complete scene context from the first camera while minimizing unnecessary frame captures, reducing power consumption without losing critical information.
Data Source
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AI summary
Disclosed in the present application are a photography method, a photography apparatus, and an electronic device. The photography method comprises: collecting a first image by means of a first camera and collecting a second image by means of a second camera, the first image comprising a picture of the current photography scene, the second camera being used for collecting the motion trajectory of a target moving object, and the first image comprising the target moving object; performing image compositing of the first image and the second image, and outputting a target image.