CN1629604A - Car light close-range photogrammetry method - Google Patents
Car light close-range photogrammetry method Download PDFInfo
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- CN1629604A CN1629604A CN 200310122714 CN200310122714A CN1629604A CN 1629604 A CN1629604 A CN 1629604A CN 200310122714 CN200310122714 CN 200310122714 CN 200310122714 A CN200310122714 A CN 200310122714A CN 1629604 A CN1629604 A CN 1629604A
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- car light
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Abstract
This invention relates to a test method for a car lamp site camera characterizing in using four camera devices vertical in pairs in two sets, their basic lines are vertical, the devices test the test points on the lamp edges when a large included angle with their basic lines is formed. Two sets of cameras get four images of the standard edge mark points, and get four images of under-test lamps placed at the same position with the standard to get the left image coordinate of the test point by comparing the left images of the standard and the under-test lamp and get the coordinate of the right image by comparing the right, then to get the special coordinate by computing them.
Description
Technical field
The present invention relates to a kind of photogrammetric survey method, particularly a kind of car light close range photogrammetry method.
Background technology
At present in the batch process of car light, the requirement of detection and localization car light profile has been proposed, with the profile that reaches the check car light and the matching of vehicle body.Traditional artificial location assembling detection device can only carry out sampling Detection to car light because detection speed is slow, and, at every kind of dissimilar car light, need the different pick-up unit of preparation, detect the cost height.Though other still have detection speed slow as three coordinatograph equidimension pick-up unit measuring accuracy height, non-special use is difficult to be used for valid online fast detecting.Digitized close-range photogrammetry system can realize general, quick, the contactless automatic detection of physical dimension.But when being applied to car light etc. and having the object of optical reflection face,, can't realize photogrammetric process usually owing to can't use method such as projection that distinctive mark is set.And because the restriction of photography pixel number and image storage speed also is difficult to realize simultaneously quick, high-acruracy survey.
Summary of the invention
The objective of the invention is to solve existing problem in the prior art, providing a kind of can high precision carry out the car light close range photogrammetry method that space measurement contrasts to the object with optical reflection face fast.The present invention designs the car light close range photogrammetry method, it is characterized in that: with four vertical mutually in twos photographic devices of placing, per two orthogonal be one group, the photographic base of two groups of photographic devices is orthogonal, the measurement point when every group of photographic device is used to measure with its baseline angle greatly on the car light edge; Four images of the standard car light edge flag point that two groups of photographic devices obtain are designated as first group of left figure and first group of right figure and second group of left figure and second group of right figure, and the removal monumented point is once more with four images at the standard car light edge of two groups of photographic devices acquisitions; Placing car light to be measured with the same position that is installed of standard car light, obtain four images of car light to be measured with two groups of photographic devices, left figure by left figure of standard of comparison car light and car light to be measured, obtain the left figure coordinate of measurement point, the right figure of right figure of standard of comparison car light and car light to be measured, obtain the right figure coordinate of measurement point, obtain the volume coordinate of car light to be measured after the calculating.Two groups of photographic devices of described usefulness obtain four images of car light to be measured and are made up of the following step, (1) a given measurement point on the standard lamp edge in advance, (2) be the center with the measurement point described in (1), in perpendicular to a plane at standard lamp edge, appoint get a bit calculate and round-off error after obtain this point correspondence coordinate on the figure about on the lamp image to be measured, (3) respectively with the point described in (2) on point described in (1) and the lamp to be measured on the standard lamp about the pairing image of coordinate among the figure carry out the similarity coupling, during maximal value about the pairing air coordinates of coordinate among the figure be the air coordinates of the measurement point of lamp to be measured.Advantage of the present invention is to reach sub-pixel precision, need not complicated error correction, and camera booth is apart from big, and the photogrammetric accuracy height is suitable for difform measuring object, does not have the projection monumented point, realizes the photogrammetric of optical surface.
Description of drawings
Accompanying drawing is the position view of photographic device of the present invention and photography target,
Below in conjunction with embodiment the present invention is elaborated,
Embodiment
Arrange with four vertical mutually in twos photographic devices of placing 1 among the figure, this is owing to can't distinguish on image between the consecutive point, but when the angle between edge line and photographic base is spent greater than 45 and measurement point in perpendicular to the space plane at edge, can distinguish, per two orthogonal be one group, after the shooting, only handle and the measurement points of its angle greater than 45 degree, promptly certain point has only about one group and schemes.The photographic base of two groups of photographic devices 1 is orthogonal, the measurement point 3 when every group of photographic device 1 is used to measure with its baseline angle greatly on car light 2 edges; Four images of the standard car light 2 edge flag points of two groups of photographic device 1 acquisitions, be designated as first group of left figure and first group of right figure and second group of left figure and second group of right figure, remove monumented point once more with four images at standard car light 2 edges of two groups of photographic devices, 1 acquisition; Placing car light 2 to be measured with the same position that is installed of standard car light 2, obtain four images of car light 2 to be measured with two groups of photographic devices 1, left figure by standard of comparison car light 2 left figure and car light to be measured 2, obtain the left figure coordinate of measurement point, the right figure of standard of comparison car light 2 right figure and car light to be measured 2, obtain the right figure coordinate of measurement point, obtain the volume coordinate of car light 2 to be measured after the calculating.Four images that two groups of photographic devices of described usefulness 1 obtain car light 2 to be measured are made up of the following step, (1) a given measurement point on the standard lamp edge in advance, (2) be the center with the measurement point described in (1), in perpendicular to a plane at standard lamp edge, appoint get a bit calculate and round-off error after obtain this point correspondence coordinate on the figure about on the lamp image to be measured, (3) respectively with the point described in (2) on point described in (1) and the lamp to be measured on the standard lamp about the pairing image of coordinate among the figure carry out the similarity coupling, during maximal value about the pairing air coordinates of coordinate among the figure be the air coordinates of the measurement point of lamp to be measured.The standard of comparison lamp can obtain the relative deviation of lamp to be measured in the volume coordinate of measured place and the volume coordinate of lamp to be measured.
Claims (2)
1, a kind of car light close range photogrammetry method, it is characterized in that: with four vertical mutually in twos photographic devices of placing, per two orthogonal be one group, the photographic base of two groups of photographic devices is orthogonal, the measurement point when every group of photographic device is used to measure with its baseline angle greatly on the car light edge; Four images of the standard car light edge flag point that two groups of photographic devices obtain are designated as first group of left figure and first group of right figure and second group of left figure and second group of right figure, and the removal monumented point is once more with four images at the standard car light edge of two groups of photographic devices acquisitions; Placing car light to be measured with the same position that is installed of standard car light, obtain four images of car light to be measured with two groups of photographic devices, left figure by left figure of standard of comparison car light and car light to be measured, obtain the left figure coordinate of measurement point, the right figure of right figure of standard of comparison car light and car light to be measured, obtain the right figure coordinate of measurement point, obtain the volume coordinate of car light to be measured after the calculating.
2, according to right 1 described a kind of car light close range photogrammetry method, it is characterized in that: two groups of photographic devices of described usefulness obtain four images of car light to be measured and are made up of the following step, (1) a given measurement point on the standard lamp edge in advance, (2) be the center with the measurement point described in (1), in perpendicular to a plane at standard lamp edge, appoint get a bit calculate and round-off error after obtain this point correspondence coordinate on the figure about on the lamp image to be measured, (3) respectively with the point described in (2) on point described in (1) and the lamp to be measured on the standard lamp about the pairing image of coordinate among the figure carry out the similarity coupling, during maximal value about the pairing air coordinates of coordinate among the figure be the air coordinates of the measurement point of lamp to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122714 CN1629604A (en) | 2003-12-19 | 2003-12-19 | Car light close-range photogrammetry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122714 CN1629604A (en) | 2003-12-19 | 2003-12-19 | Car light close-range photogrammetry method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1629604A true CN1629604A (en) | 2005-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310122714 Pending CN1629604A (en) | 2003-12-19 | 2003-12-19 | Car light close-range photogrammetry method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1629604A (en) |
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2003
- 2003-12-19 CN CN 200310122714 patent/CN1629604A/en active Pending
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