Variable Frame Rate Camera Micro-Frame Capture for Lighting Setups
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Solution Overview
Problem
Traditional methods for capturing multiple lighting setups in a single filming take result in motion artifacts and excessive image data storage requirements, limiting recording time and image quality due to the need for high-speed cameras to capture numerous frames per cinematic frame.
Innovation Solution
A variable frame rate camera records high-speed frames only during a portion of each cinematic frame, minimizing motion offset and image data storage by capturing micro frames in short bursts, allowing for concurrent recording of multiple lighting setups with minimal storage needs and flexible lighting arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-speed camera is used to capture multiple lighting setups in a single take, then motion artifacts are reduced, but image data storage requirements increase dramatically
Solution Approach 1:
The cinematic frame is segmented into multiple micro-frames, each capturing a different lighting setup. Instead of capturing continuous high-speed footage, the system divides the frame into discrete segments (micro-frames) that can be independently captured and stored, reducing overall data volume while maintaining the ability to reconstruct multiple lighting conditions
Solution Approach 2:
The camera captures only the necessary portion of each cinematic frame at high speed - specifically, only the micro-frames corresponding to different lighting setups are captured at high frame rates, while other portions use standard frame rates. This partial application of high-speed capture reduces storage requirements while still achieving the goal of capturing multiple lighting setups
2Reliability
If a high-speed camera operates at 4800 FPS to capture multiple lighting setups, then motion artifacts are minimized, but the recording time is limited and storage requirements increase
Solution Approach 1:
The camera alternates between high-speed capture modes and standard capture modes in a periodic fashion. During high-speed capture, multiple lighting setups are captured in rapid succession; during standard capture, the system can record longer duration content at lower frame rates. This periodic switching allows the system to capture multiple lighting setups with minimal motion artifacts while extending the overall recording duration
Solution Approach 2:
The frame rate is made dynamic rather than constant - the camera automatically adjusts its frame rate based on the capture requirements. When capturing multiple lighting setups within a cinematic frame, the frame rate increases to capture the rapid lighting changes; when capturing standard footage between lighting setup changes, the frame rate returns to normal cinematic rates, thereby extending recording duration
3Quantity of substance
If traditional methods are used to film multiple lighting setups, then storage requirements are reduced, but motion artifacts occur and continuity must be broken into multiple takes
Solution Approach 1:
Multiple lighting setups that would traditionally require separate takes are merged into a single cinematic frame by capturing them as sequential micro-frames. The system combines the capture of multiple lighting conditions within one continuous take, eliminating continuity breaks while using efficient storage methods to manage the resulting data
4Adaptability or versatility
If continuous high-speed recording is used to capture multiple lighting setups, then all lighting conditions are captured, but storage requirements become excessive
Solution Approach 1:
Different portions of the cinematic frame are assigned different capture qualities and frame rates. Micro-frames corresponding to specific lighting setups are captured at high speed with high quality, while other portions of the frame use standard capture parameters. This local differentiation allows comprehensive lighting setup capture while reducing overall storage requirements
Data Source
AI summary
Apparatus for recording a scene using a plurality of lighting setups in rapid sequence to concurrently record a plurality of motion picture clips of the scene, one motion picture clip for each lighting setup, the plurality of clips together exhibiting negligible motion offset. The apparatus includes multiple light sources, a controller to define the plurality of lighting setups using the multiple light sources and to actuate the lighting setups in sequence, a variable frame rate camera to capture a sequence of micro frames showing the scene illuminated by each one of the plurality of lighting setups in sequence during each micro frame, and optionally a processing module to process the sequence of micro frames to generate a motion picture clip of the scene for each of the lighting setups. The duration of the micro frame sequence is short enough to minimize the need for an algorithm for removing motion artifacts.