Image Retrieval Apparatus with Dynamic Limit Points for Frame Navigation
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Solution Overview
Problem
Existing image retrieval systems lack a mechanism to efficiently and quickly retrieve a target frame from a video image, as they do not restrict the transition range during frame forwarding or rewinding, leading to time-consuming searches.
Innovation Solution
An image retrieval apparatus that sets up limit points in both forward and reverse transition directions, stopping the image display when reaching these points to prevent overshooting, allowing for precise and rapid retrieval of desired images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transition range in frame forwarding or rewinding is not restricted, then the user can freely navigate through images, but the image transition process may be performed outside the target frame requiring time to retrieve the target image
Solution Approach 1:
The patent applies dynamics by making the transition range adjustable based on the user's navigation state. The system dynamically changes the forwarding/rewinding range according to whether the user is approaching the target frame from forward or backward direction, optimizing the balance between navigation freedom and retrieval efficiency
Solution Approach 2:
The patent changes the parameter of transition range based on the current frame position relative to the target frame. When the current frame is before the target frame, the forwarding range is restricted; when after the target frame, the rewinding range is restricted. This parameter change resolves the contradiction by adapting the constraint level to the current state
2Loss of time
If limit points are set to restrict transition range, then the time to retrieve target image is reduced, but the device complexity increases due to additional control logic
Solution Approach 1:
The patent applies preliminary action by pre-defining the limit points based on the target frame position before the user actually performs navigation. The system calculates and sets the appropriate forwarding/rewinding ranges in advance, so when the user navigates, the constraints are already in place to prevent overshooting without requiring complex real-time calculations
Solution Approach 2:
The system uses feedback from the user's navigation actions to adjust the transition range. When the user forwards or rewinds frames, the system monitors the current position relative to the target frame and adjusts the allowed transition range accordingly, creating a feedback loop that reduces time while managing complexity through state-based rules
Data Source
AI summary
An image retrieval apparatus capable of retrieving a desired image from images shot continuously in a short time. A display control unit displays the images on a display unit in order in a first or second transition direction according to a user's operation. A setting unit sets up a limit point in the first (second) transition direction when the direction in which the images are displayed in order is switched from the first (second) transition direction to the second (first) transition direction based on an image displayed at a time of switching. The display control unit stops displaying the images in order in the first (second) transition direction when a displayed image reaches an image corresponding to the limit point in the first (second) transition direction during the images are displayed in order in the first (second) transition direction.