Long Shutter Frame Generation via Weighted Frame Composition
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Solution Overview
Problem
Current portable devices lack the capability to generate digital long shutter images or videos without hardware supports such as adjustable apertures or Neutral Density filters, limiting their ability to achieve a long shutter effect.
Innovation Solution
A method and system that assign weights to frames or frame regions, allowing for the composition of long shutter frames using a processing unit and storage unit within portable devices, which can capture frames with a same exposure time or from video files, and perform image preprocessing like stabilization, to generate long shutter effects without requiring specific hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardware supports such as adjustable aperture or ND filter are used, then long shutter effect can be achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical/optical hardware components (aperture, ND filter) with a digital processing system. The processing unit composes multiple frames captured at normal exposure settings to synthesize a long shutter effect image, eliminating the need for physical aperture adjustment or neutral density filters.
Solution Approach 2:
The patent creates a digital copy of the long shutter effect by composing multiple captured frames. Instead of using physical filters to modify light transmission, the system captures multiple copies of the scene at different moments and combines them digitally to simulate the effect of a single long exposure capture.
2Adaptability or versatility
If multiple frames are composed with weights, then long shutter frame can be generated without hardware, but processing complexity increases
Solution Approach 1:
The patent applies different weight parameters to different frames during composition. By adjusting the weight parameter for each frame, the system can emphasize or de-emphasize specific captures, allowing control over the final composite image's characteristics and enabling adaptation to various shooting scenarios.
Solution Approach 2:
The patent divides the long shutter effect generation process into discrete frame segments. Each captured frame is treated as a separate segment that can be independently processed and weighted before being combined into the final composite image, allowing flexible manipulation of individual components.
Data Source
AI summary
Methods and systems for generating long shutter frames are provided. First, frames are captured or obtained from a video file. A weight is assigned to the respective frame. The frames are composed according to the corresponding weights to generate a long shutter frame.