Remote Camera Image Selection Using Time Offset Compensation
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Solution Overview
Problem
Existing remote camera control systems face challenges in obtaining a clear image due to time delays in image transmission and processing, making it difficult to capture desired angles and focus when the person operating the camera and the subject are different individuals.
Innovation Solution
A method and apparatus that encodes camera images, streams them to a remote controller, and selects images based on a predetermined time interval calculated by subtracting the sum of transmission and processing delays, ensuring that the captured image corresponds to the desired time point, thereby eliminating time lag issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If images are continuously captured and transmitted in real-time remote photography, then the operator can view images on the remote controller, but time delay occurs between the captured image and the displayed image
Solution Approach 1:
The system performs preliminary actions by continuously capturing images and storing them in advance before the capture instruction is received. When the capture instruction is received, the system has already prepared a sequence of images captured at predetermined time intervals, allowing immediate selection and transmission of the appropriate image without waiting for real-time capture during the instruction moment.
Solution Approach 2:
The system introduces an intermediary buffer mechanism where images are stored in memory with associated timing information. This buffer acts as an intermediary between the continuous image capture process and the discrete capture instructions, allowing the system to match the correct pre-captured image to the instruction timing by subtracting transmission and processing delays from the instruction time.
2Ease of operation
If the camera continuously captures and transmits images to the remote controller, then real-time viewing is enabled, but image data transmission and processing time increases
Solution Approach 1:
The camera performs preliminary capture of a sequence of images at predetermined time intervals before the actual capture instruction is received. This preliminary action ensures that when the instruction is received, the system can immediately select from pre-captured images rather than waiting for real-time capture and transmission during the critical moment.
Solution Approach 2:
The system dynamically adjusts the image selection based on the received instruction time. By calculating the appropriate time offset (subtracting transmission and processing delays from the instruction time), the system dynamically selects the most accurate pre-captured image that corresponds to the intended capture moment, optimizing both responsiveness and accuracy.
3Measurement precision
If images are selected based on the exact time of capture instruction, then accurate timing is achieved, but transmission and processing delays cause the selected image to not match the desired moment
Solution Approach 1:
The system applies preliminary anti-action by pre-capturing images at multiple time points before the instruction is received. This creates a buffer of pre-captured images that compensates for the inherent transmission and processing delays, allowing the system to select an image that accurately represents the desired capture moment despite the delay in receiving and processing the instruction.
Solution Approach 2:
The system replaces the traditional real-time mechanical capture-and-transmit system with a computational approach. Instead of relying on synchronous real-time capture during instruction reception, the system uses time calculation and digital selection logic to identify and select the appropriate pre-captured image, substituting computational timing correction for mechanical real-time synchronization.
Data Source
Figure 1A
Figure 1B~1C
Figure 1D~1E
AI summary
A method of providing an image of an image capture apparatus. The method comprises: receiving, by the image capture apparatus, a first input instructing the image capture apparatus to capture a sequence of images; capturing the sequence of images, in response to the first input; receiving, by the image capture apparatus, a second input instructing the image capture apparatus to present at least two images of the sequence of images during capturing the sequence of images in response to the first input; and presenting the at least two images of the sequence of images based on a time at which the second input is received by the image capture apparatus, wherein the at least two images of the sequence of images are captured prior to the time at which the second input is received by the image capture apparatus.