Imaging Control Device Auxiliary Light Timing Overlap

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Solution Overview

Problem

Existing imaging systems struggle to achieve appropriate exposure when consecutively imaging fast-moving subjects at high speeds due to overlapping light emission periods, which can result in inadequate brightness in captured images.

Innovation Solution

An imaging control device and method that non-overlap light emission periods by adjusting the end timing of auxiliary light emission to follow the imaging periods, and control light emission intensity or sensitivity in subsequent periods based on overlapping periods to ensure proper exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If consecutive imaging is performed at high speed with short exposure time and short imaging interval, then imaging speed and productivity are improved, but light emission periods overlap with subsequent imaging periods causing inadequate exposure

Engineering Contradiction:
Improveimaging speedVSAvoidexposure quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary calculation of light emission periods for all imaging apparatuses before actual imaging. The control device determines the light emission period of auxiliary light in advance, compares it with subsequent imaging periods, and pre-determines compensation values for light emission intensity or imaging sensitivity to ensure proper exposure without delaying the imaging sequence

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control device uses feedback from the calculated light emission periods to adjust imaging conditions. When overlap is detected between auxiliary light emission and subsequent imaging, the system automatically compensates by adjusting light emission intensity or imaging sensitivity based on the degree of overlap, ensuring each imaging operation receives appropriate light exposure

Inventive Principle:
Principle #23Feedback

2Illumination intensity

If light emission period is extended to ensure adequate lighting, then illumination quality is improved, but overlap with subsequent imaging periods increases causing overexposure or interference

Engineering Contradiction:
Improvelighting qualityVSAvoidauxiliary light interference
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically changes parameters (light emission intensity or imaging sensitivity) based on the calculated overlap between light emission periods and imaging periods. When overlap is detected, the control device adjusts these parameters to compensate for the interference, maintaining proper exposure levels without extending the light emission period unnecessarily

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The control device implements dynamic adjustment of imaging conditions based on real-time calculation of light emission periods. The system continuously monitors the timing relationships between auxiliary light emission and imaging operations, making adaptive changes to light emission intensity or imaging sensitivity to prevent both underexposure and overexposure conditions

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10798308B2Imaging control device, imaging apparatus, imaging control method, and imaging control program
Publication Date: 2020.10.06 FUJIFILM CORP
  • US10798308B2 patent drawing
  • US10798308B2 patent drawing
  • US10798308B2 patent drawing

AI summary

An processor that performs consecutive imaging control for consecutively imaging a subject by an imaging sensor and emitting auxiliary light in an imaging period in which each of the plurality of times of the imaging is performed, the imaging periods do not overlap, an end timing of a light emission period of the auxiliary light started in the imaging period is later than an end timing of the imaging period, the imaging control device further controls a light emission intensity of the auxiliary light in the light emission period started in the second imaging period or imaging sensitivity in the second imaging period based on the light emission intensity of the auxiliary light emitted in an overlapping period overlapping with the second imaging period in the light emission period started in the first imaging period.