Short Clip Generation from Sparse Frames for Head-Mounted Cameras
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Solution Overview
Problem
Capturing spontaneous moments with head-mounted devices is challenging due to the lack of image preview, high battery consumption, and inefficient processing of wide-angle fixed-focus lens cameras, leading to cumbersome and lengthy video content that requires manual editing.
Innovation Solution
Generating short clips of 0.5 to 5 seconds in length by selecting key frames with scene analysis, applying visual effects, and creating in-between frames remotely, which reduces battery consumption and processing load on head-mounted devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous video capture is performed with head-mounted devices, then spontaneous moments can be captured, but battery consumption increases and processing load increases
Solution Approach 1:
The patent segments continuous video capture into discrete key frame capture based on motion detection. Instead of continuously capturing all frames, the system identifies and captures only key frames that represent significant moments, dividing the capture process into meaningful segments that reduce overall data volume and energy consumption while preserving important spontaneous moments.
Solution Approach 2:
The system performs partial action by capturing only the necessary key frames rather than all frames. Motion detection triggers selective capture, performing just enough action to capture spontaneous moments without the excessive energy consumption of continuous full-video capture.
2Productivity
If key frames are selected and processed locally on head-mounted devices, then short clips can be generated, but processing load and device complexity increase
Solution Approach 1:
The patent extracts the complex processing operations from the head-mounted device and relocates them to remote servers. Key frame selection, visual effect application, and in-between frame generation are performed remotely, removing the processing burden from the wearable device while maintaining fast clip generation through efficient remote computation.
Solution Approach 2:
The system introduces a remote server as an intermediary between the head-mounted device and the final video output. The device captures key frames and sends them to the remote server, which acts as a mediator to perform all complex processing operations including visual effects and frame interpolation, then returns the finished clips to the device.
3Area of stationary object
If wide-angle fixed-focus lens cameras are used in head-mounted devices, then field of view is increased, but image quality and processing efficiency decrease
Solution Approach 1:
The system creates multiple copies of key frames with different visual effects applied (e.g., touring, action, long exposure). Instead of relying on a single wide-angle lens to capture all types of content, the patent generates multiple versions of the captured moments, each optimized for different viewing experiences, effectively copying the scene with enhanced characteristics.
Solution Approach 2:
The patent applies parameter changes by transforming key frames through various visual effects that modify image properties. The touring effect creates panoramic expansions, action effects enhance motion, and long exposure effects alter temporal parameters. These parameter changes enhance image quality and variety without requiring multiple physical lenses.
4Manufacturing precision
If manual editing is performed on captured video, then content can be optimized, but time consumption and user effort increase
Solution Approach 1:
The system performs self-service by automatically generating optimized short clips without requiring user intervention. The remote server autonomously selects key frames, applies appropriate visual effects based on scene analysis, generates in-between frames, and assembles the final clips. This self-service approach eliminates manual editing while maintaining high content quality through automated intelligent processing.
Solution Approach 2:
The patent replaces the mechanical manual editing process with automated computational processing. Instead of users manually selecting and editing frames, the system uses algorithms for motion detection, key frame selection, and visual effect application, substituting automated image processing mechanics for human manual operations.
Data Source
AI summary
This disclosure is related to automatic generation of short clips based on a user input at a device including a camera. A method can include capturing image frames of a scene with the camera, selecting key frames from among the image frames by detecting targets in the scene and motion, applying, with processing logic that is remote from the device that includes the camera, a visual effect to the key frames, and recording an audio recording of the scene in a same time frame that the image frames are captured with the camera. The audio recording is recorded with a microphone of the device, and the method also includes generating an audio clip that matches the visual effect applied to the key frames and generating the short clip by combining the key frames having the visual effect applied and the audio clip.