Imaging Device Zoom Tracking Control via Stationary State Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing imaging devices fail to accurately generate tracking data for focus lens position changes due to lack of consideration for the stationariness of either the device or the subject during focal length changes.
Innovation Solution
An imaging device with a stationariness determination unit, focus determination unit, storage control unit, and generation unit that determines and stores focal lengths and focus lens positions when both the device and subject are stationary, allowing for accurate tracking data generation and zoom tracking control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tracking data is generated without considering stationariness of the imaging device or subject, then the generation process is simplified and faster, but the accuracy of tracking data deteriorates
Solution Approach 1:
The patent applies preliminary action by determining stationariness of the imaging device and subject before generating tracking data. The control unit checks whether the imaging device and subject are stationary during focal length changes, and only generates tracking data when both are confirmed stationary. This preliminary verification ensures data accuracy without requiring complex continuous monitoring systems throughout the entire operation.
Solution Approach 2:
The patent replaces complex mechanical monitoring systems with a simplified control unit that uses image processing and coordinate analysis to determine stationariness. Instead of using multiple sensors and complex mechanical detection systems, the control unit analyzes coordinate changes between sequential images to infer whether the device or subject is stationary, substituting mechanical complexity with computational simplicity.
2Measurement precision
If stationariness determination is implemented, then tracking data accuracy is improved, but processing time and computational load increase
Solution Approach 1:
The patent applies partial action by performing stationariness determination only when focal length changes are detected, rather than continuously monitoring during all operations. The control unit checks stationariness at specific critical moments (before and during focal length changes), which reduces overall processing time while still ensuring accuracy when it matters most for tracking data generation.
Solution Approach 2:
The control unit performs self-service by using the existing image data and coordinate information already captured during normal operation to determine stationariness. Instead of requiring separate dedicated measurement systems or additional hardware, the control unit leverages the operational image data itself to infer stationariness through coordinate analysis, eliminating the need for separate time-consuming measurement processes.
Data Source
AI summary
An imaging device stores a focal length and a position of a focus lens in a storage unit in a case in which a focal state is determined to be a focus state in which a subject is in focus and at least one of the imaging device or the subject is determined to be stationary; generates tracking data for changing the position of the focus lens according to a change in focal length, using a plurality of stored focal lengths and a plurality of stored positions of the focus lens; and performs a zoom tracking control using the generated tracking data.