Imaging position analyzing method
First Claim
1. An imaging position analyzing device that analyzes an imaging position of each of multiple frames constituting an image, where the image is captured at preset imaging timings during traveling with a substantially fixed attitude angle relative to ground surface, and each of the multiple frames of the image includes a predetermined continuum captured commonly in at least one of adjacent frames immediately before and after the each frame,the imaging position analyzing device comprising:
- an input module that inputs image data of the multiple frames;
an initial path input module that inputs an initial path of the traveling as an initial value of analysis; and
an imaging position analyzer that tentatively sets imaging positions of the respective frames corresponding to the preset imaging timings along a moving direction of the initial path and corrects the tentatively set imaging positions in a perpendicular direction intersecting with the moving direction of the initial path based on a positional misalignment of the predetermined continuum captured in the each frame and at least one adjacent frame of the image, so as to implement analysis of the imaging position of each frame.
1 Assignment
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Accused Products
Abstract
The imaging position of each of the frames in image data of a plurality of frames captured while a vehicle is traveling is accurately determined.
An image data acquiring device (100) captures a front image by means of a video camera (120) while a vehicle is traveling. When in imaging, the device associates the vehicle speed pulse detected by a vehicle speed sensor (104) with the frame data and records them. An image data processing device (200) arranges data on each frame of the image along the initial path according to the correspondence with the vehicle speed pulse. The device determines the variation between the frames of a feature point such as a road lane marking included in the image, reflects the variation on the initial path, and corrects the errors in the direction perpendicular to the moving direction so as to determine the traveling path and imaging positions of the frames.
With this, the accuracy in determining the imaging position of each frame is improved.
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Citations
14 Claims
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1. An imaging position analyzing device that analyzes an imaging position of each of multiple frames constituting an image, where the image is captured at preset imaging timings during traveling with a substantially fixed attitude angle relative to ground surface, and each of the multiple frames of the image includes a predetermined continuum captured commonly in at least one of adjacent frames immediately before and after the each frame,
the imaging position analyzing device comprising: -
an input module that inputs image data of the multiple frames; an initial path input module that inputs an initial path of the traveling as an initial value of analysis; and an imaging position analyzer that tentatively sets imaging positions of the respective frames corresponding to the preset imaging timings along a moving direction of the initial path and corrects the tentatively set imaging positions in a perpendicular direction intersecting with the moving direction of the initial path based on a positional misalignment of the predetermined continuum captured in the each frame and at least one adjacent frame of the image, so as to implement analysis of the imaging position of each frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An imaging position analyzing method that analyzes an imaging position of each of multiple frames constituting an image, where the image is captured at preset imaging timings during traveling with a substantially fixed attitude angle relative to ground surface, and each of the multiple frames of the image includes a predetermined continuum captured commonly in at least one of adjacent frames immediately before and after the each frame,
the imaging position analyzing method performed by a computer comprising: -
an input step of inputting image data of the multiple frames; an initial path input step of inputting an initial path of the traveling as an initial value of the analysis; and an imaging position analyzing step of tentatively setting imaging positions of the respective frames corresponding to the preset imaging timings along a moving direction of the initial path and correcting the tentatively set imaging positions in a perpendicular direction intersecting with the moving direction of the initial path based on a positional misalignment of the predetermined continuum captured in the each frame and at least one adjacent frame of the image, so as to implement analysis of the imaging position of each frame.
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13. A recording medium in which a computer program is recorded, the computer program being executed to analyze an imaging position of each of multiple frames constituting an image, where the image is captured at preset imaging timings during traveling with a substantially fixed attitude angle relative to ground surface, and each of the multiple frames of the image includes a predetermined continuum captured commonly in at least one of adjacent frames immediately before and after the each frame,
the computer program recorded in the recording medium comprising: -
an input program code of inputting image data of the multiple frames; an initial path input program code of inputting an initial path of the traveling as an initial value of analysis; and an imaging position analyzing program code of tentatively setting imaging positions of the respective frames corresponding to the preset imaging timings along a moving direction of the initial path and correcting the tentatively set imaging positions in a perpendicular direction intersecting with the moving direction of the initial path based on a positional misalignment of the predetermined continuum captured in the each frame and at least one adjacent frame of the image, so as to implement analysis of the imaging position of each frame.
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14. An image data acquiring device that generates image data of multiple frames to be input into an imaging position analyzing device, which analyzes an imaging position of each frame based on the input image data of the multiple frames,
the image data acquiring device comprising: -
a vehicle that travels on a ground surface; an imaging device that is attached to the vehicle with a substantially fixed attitude angle relative to the vehicle and captures an image of the multiple frames at preset timings; and a moving distance information recorder that records moving distance information, which represents moving of the vehicle by a predetermined distance, in correlation to a time of the image capture.
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Specification