Camera Eye State Detection for Continuous Shooting

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Solution Overview

Problem

Conventional digital cameras often select and record images of subjects with closed eyes when attempting to capture specific individuals, leading to undesirable results.

Innovation Solution

A camera system equipped with an image-capturing unit, identification unit, and recording unit that performs continuous shooting, identifies images where the subject's eyes are open, and records only those images, allowing users to designate specific persons and utilize face recognition for accurate eye state judgment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If continuous shooting is performed to capture images of a subject, then the probability of obtaining an image with the subject's eyes open increases, but the risk of accidentally selecting and recording an image with closed eyes also increases

Engineering Contradiction:
Improveaccuracy of capturing desired imageVSAvoidundesirable image selection
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The camera implements a feedback mechanism where the identification unit continuously monitors each captured image during continuous shooting to determine eye state. Based on this feedback, the system automatically stops shooting when an image with open eyes is identified, preventing further unnecessary shots and ensuring only desired images are recorded.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The identification unit performs preliminary evaluation of each captured image immediately after shooting to assess the eye state before the image is finalized for recording. This preliminary action allows the system to filter out unwanted images with closed eyes before they are committed to storage.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If continuous shooting is performed to ensure the subject's eyes are open, then image quality is improved, but power consumption increases

Engineering Contradiction:
Improveimage capture success rateVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system uses feedback from the identification unit to monitor eye state in real-time during continuous shooting. When an image with open eyes is detected, the feedback signal triggers immediate termination of continuous shooting, thereby minimizing power consumption while ensuring successful image capture.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The identification unit performs preliminary assessment of each captured frame to detect open eyes before the shooting sequence continues. This preliminary detection allows early termination of the shooting process, reducing the total number of shots taken and consequently lowering power consumption.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If eye state detection is implemented during continuous shooting, then accurate image selection is achieved, but processing time increases

Engineering Contradiction:
Improveeye state detection accuracyVSAvoidimage processing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The identification unit performs preliminary eye state detection on each captured image immediately during the shooting sequence. By conducting this detection in advance and in real-time, the system can make immediate decisions about whether to continue or stop shooting, minimizing overall processing time while maintaining high detection accuracy.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8532345B2Camera and image recording program product
Publication Date: 2013.09.10 NIKON CORP
  • US8532345B2 patent drawing
  • US8532345B2 patent drawing
  • US8532345B2 patent drawing

AI summary

A camera includes: an image-capturing unit that captures images of a photographic subject by image sensors and creates image data of a plurality of shot images based on an instruction for continuous shooting by a user; an identification unit that performs, each time when image data of one shot image from among the plurality of shot images is created, a state judgment whether or not eyes of a person included in the photographic subject appearing in the one shot image are open and identifies image data of the one shot image as identified image data when a result of the state judgment is YES; and a recording unit that records the identified image data in a nonvolatile storage medium.