Video Target Feature Tracking for Accurate Visual Effects

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Solution Overview

Problem

Inaccurate or noisy tracking of targets in video content leads to improper application of visual effects due to movement and changes in shape or size of the targets.

Innovation Solution

Identifying multiple stable features of the target within the video content, such as dimensions and parts, and using these features to accurately apply visual effects like dolly zoom and stabilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If tracking of the target is performed based on movement and shape changes, then the visual effect can be applied to moving targets, but the tracking accuracy becomes noisy and improper application occurs

Engineering Contradiction:

Improveability to track moving targets with shape changesVSAvoidtracking accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent segments the target tracking problem into multiple stable features (e.g., corners, edges, keypoints) that remain relatively constant despite overall target movement and deformation. By tracking these stable features individually and using them to define a region of interest, the system maintains tracking accuracy even when the target changes shape or moves dynamically in the video sequence.

Inventive Principle:

Principle #1Segmentation

2Productivity

If visual effect is applied based on inaccurate tracking, then the processing can continue without interruption, but the visual effect application becomes improper and inaccurate

Engineering Contradiction:

Improvecontinuous video processingVSAvoidvisual effect application accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The system implements feedback by continuously analyzing video frames to identify stable features of the target, using these features to determine an accurate region of interest, and applying the visual effect only within this defined region. This feedback loop ensures that even during continuous processing, the visual effect is applied precisely to the intended target area rather than based on inaccurate tracking data.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12482058B1Identification of visual features for applying effect

Publication Date: 2025.11.25 GOPRO INC

AI summary

Visual content of a video may depict a target. Multiple stable features of the target, such as multiple stable parts of the target and/or multiple stable properties (e.g., dimensions, center) of the target may be identified for use in applying a visual effect. Application of the visual effect to the video may be improved by use of the multiple stable features of the target.