Method for adjusting vehicle panorama system
A method for adjusting vehicle panorama system, which comprises: a calibration pattern is disposed around a vehicle, and at least one patterned feature and a plurality of cameras are disposed on the vehicle; capture the calibration pattern and patterned feature to obtain an original image; capture the patterned feature after a period of time to obtain a correction image; compares the correction image and original image and corrects the panorama images by recombining the images shoot by the plurality of cameras according to a comparison result.
1. Method for adjusting a vehicle panorama system, comprising the steps of:
disposing a calibration pattern around a vehicle, while providing at least one patterned feature and a plurality of cameras to be disposed on the vehicle;
capturing the calibration pattern and the at least one patterned feature so as to obtain an original image;
capturing the at least one patterned feature and registering the captured patterned features into a memory after a period of time so as to obtain a correction image;
comparing the correction image with original image for generating a comparison result to be used in a panorama image calibration process by recombining the images shoot by the plural cameras;
capturing the calibration pattern and the patterned feature and registering the captured patterned features into the memory for obtaining the original image;
performing an image distortion calibration process upon the original image for generating an original image distortion calibration parameter;
performing a bird-eye view conversion process upon the original image for generating an original image bird-eye view conversion parameter;
performing an image alignment process upon the original image for generating an original image alignment parameter;
performing a weight computing process of image stitching for generating a weighting parameter of image stitching; and
performing a calculation for obtaining the original image conversion lookup table according to the original image distortion calibration parameter, the original image bird-eye view conversion parameter, the original image alignment parameter and the weighting parameter of image stitching.
2. Method for adjusting a vehicle panorama system of claim 1 , adapted to be performed by the use of an embedded device for enabling the establishing of original image conversion lookup table and the correction image conversion lookup table, wherein the embedded device comprises:
an image processing interface, for processing the original image and the correction image;
a computing core, for performing the image distortion calibration process, the bird-eye view conversion process, the image alignment process and the weight computing process of image stitching, and also the comparing of the original image and the correction image; and
a memory unit, for storing the original image conversion lookup table or the correction image conversion lookup table.
3. Method for adjusting a vehicle panorama system of claim 2 , wherein images of the calibration pattern and the patterned feature that are captured by the plural cameras are transmitted to the image processing interface to be processed.
4. Method for adjusting a vehicle panorama system of claim 1 , further comprising the steps of:
capturing the patterned feature and registering the captured patterned features into the memory for obtaining the correction image;
comparing the correction image with the original image;
establishing a correction image bird-eye view conversion parameter according to the comparison; and
performing a calculation for obtaining the correction image conversion lookup table according to the correction image bird-eye view conversion parameter, the original image distortion calibration parameter, the original image alignment parameter and the weighting parameter of image stitching.
5. Method for adjusting a vehicle panorama system of claim 4 , adapted to be performed by the use of an embedded device for enabling the establishing of original image conversion lookup table and the correction image conversion lookup table, wherein the embedded device comprises:
an image processing interface, for processing the original image and the correction image;
a computing core, for performing the image distortion calibration process, the bird-eye view conversion process, the image alignment process and the weight computing process of image stitching, and also the comparing of the original image and the correction image; and
a memory unit, for storing the original image conversion lookup table or the correction image conversion lookup table.
6. Method for adjusting a vehicle panorama system of claim 5 , wherein images of the calibration pattern and the patterned feature that are captured by the plural cameras are transmitted to the image processing interface to be processed.
7. Method for adjusting a vehicle panorama system of claim 1 , wherein the patterned feature is a feature selected from the group consisting of: a vehicle sticker, an infrared pattern, a laser pattern, and a fluorescent pattern.
8. Method for adjusting a vehicle panorama system of claim 1 , wherein each of the original image conversion lookup table and the correction image conversion lookup table is an around view monitoring (AVM) image conversion lookup table.
9. Method for adjusting a vehicle panorama system of claim 1 , wherein during the performing of the capturing of the calibration pattern and the at least one patterned feature for obtaining the original image, the vehicle remains static.
10. Method for adjusting a vehicle panorama system of claim 1 , wherein during the performing of the capturing of the at least one patterned feature for obtaining the correction image, the vehicle can be static or moving.