Capsule Endoscope Frame Rate Adjustment via Relative Motion
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Solution Overview
Problem
Capsule endoscopes face challenges in maintaining an optimal frame rate due to battery limitations, leading to either missing images or redundant images, and existing solutions are inadequate in accurately adjusting frame rates without interfering with human motion or increasing power consumption.
Innovation Solution
The method involves using acceleration sensors in both the capsule endoscope and an external device to determine relative motion amplitude, adjusting the frame rate accordingly to prevent missing images during movement and reduce redundant images during stillness, by calculating and comparing acceleration data to set dynamic thresholds and correct waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the frame rate is increased to capture more images during movement, then the probability of missing images is reduced, but the battery power is consumed faster and redundant images increase when the capsule is stationary
Solution Approach 1:
The patent implements dynamic frame rate adjustment based on real-time motion detection. The system transitions from a static frame rate to a dynamic one that adapts to the capsule's motion state, using acceleration sensors to detect movement and adjust the frame rate accordingly - higher during movement, lower during stationary periods
Solution Approach 2:
The patent changes the frame rate parameter based on motion amplitude thresholds. By monitoring acceleration data and comparing it against predefined thresholds, the system adjusts the frame rate parameter to match the actual examination needs, reducing unnecessary image capture during low-motion periods
2Reliability
If the frame rate is increased to reduce missing images during violent movement, then image completeness is improved, but the number of duplicate and redundant images increases when moving slowly
Solution Approach 1:
The system dynamically changes the frame rate parameter based on motion amplitude. When motion exceeds a threshold indicating violent movement, the frame rate increases to ensure complete image capture. When motion is minimal, the frame rate decreases to eliminate redundant images and improve review efficiency
3Device complexity
If a single acceleration sensor in the capsule is used to determine motion, then the device complexity is reduced, but the accuracy of motion detection is compromised due to human motion interference
Solution Approach 1:
The patent introduces an external device as an intermediary reference point. By comparing acceleration data from the capsule with data from the external device, the system can distinguish between human motion (affecting both sensors similarly) and capsule motion (affecting only the capsule sensor), thereby improving measurement precision without significantly increasing complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively adjusts the frame rate based on the capsule's motion, reducing battery consumption and image redundancy, while minimizing errors from human motion interference, thus improving the efficiency and accuracy of image capture.
Implementation Method 1
receiving a first acceleration information ac(t) sensed by a first acceleration sensor in a capsule endoscope
Data Source
AI summary
The present invention discloses a capsule endoscope system, an automatic frame rate adjustment method thereof and a computer readable storage medium. The automatic frame rate adjustment method includes: receiving a first acceleration information ac(t) sensed by a first acceleration sensor in a capsule endoscope; receiving a second acceleration information am(t) sensed by a second acceleration sensor in an external device; calculating and comparing the first acceleration information ac(t) and the second acceleration information am(t) to obtain the relative motion amplitude statem(t) between the capsule endoscope and the external device; adjusting the frame rate of the capsule endoscope according to the relative motion amplitude statem(t), where, the larger the relative motion amplitude statem(t), the larger the frame rate F0(t).