Imaging Apparatus Moving Object Obstruction Detection
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Solution Overview
Problem
Existing imaging apparatuses face challenges in suppressing erroneous operations caused by obstruction of moving objects during focus control.
Innovation Solution
An imaging apparatus equipped with a processor that detects moving objects in pixel data obtained at different time points, performs obstruction detection by comparing predicted distances with actual distances to objects at future positional coordinates, and adjusts imaging controls based on the detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If focus control is performed based on detected subject position, then focus accuracy is improved, but erroneous operation occurs when moving objects are obstructed
Solution Approach 1:
The system performs preliminary obstruction detection by comparing predicted future positions of moving objects with detected objects at those positions. Before focus control is executed, the system checks whether a moving object will be obstructed by another object at its predicted position, and prevents erroneous focus adjustment when obstruction is detected, thereby ensuring reliable operation.
2Reliability
If obstruction detection is performed for moving objects, then operation reliability is improved, but processing complexity increases
Solution Approach 1:
The system calculates predicted positional coordinates of moving objects at a future time point based on current position and velocity information. This preliminary prediction allows the system to proactively identify potential obstructions before they occur, enabling reliable focus control without requiring complex real-time obstruction detection mechanisms.
Solution Approach 2:
The system introduces predicted positional coordinates as an intermediary concept to bridge current object detection and future obstruction risk. By comparing the predicted position of a moving object with the detected position of stationary objects at that future coordinate, the system efficiently determines obstruction risk without requiring complex simulations or predictions of all possible scenarios.
3Speed
If focus adjustment is continuously performed, then focus tracking speed is improved, but erroneous focus control occurs when obstruction is present
Solution Approach 1:
The system applies preliminary anti-action by detecting potential obstructions before they cause erroneous focus control. When the predicted position of a moving object coincides with a detected object at that position, the system prevents the focus adjustment that would otherwise be executed, thereby counteracting the potential harmful effect of obstruction before it occurs.
Data Source
AI summary
An imaging apparatus includes: an imaging element that images a subject through an imaging optical system; and a processor, and the processor is configured to: detect a moving object present in a plurality of pieces of pixel data obtained by the imaging element at different time points; perform detection processing of obstruction of the moving object by an object at a time point in a future based on a result of comparison between a first distance that is a predicted distance to the moving object at the time point in the future and a second distance that is a distance to the object present at a predicted positional coordinate of the moving object at the time point in the future; and perform an imaging control based on a result of the detection processing.