# Conjugate Points

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Related to Conjugate Points: conjugate planes

## conjugate points

[′kän·jə·gət ′pȯins]
(mathematics)
For a conic section, two points either of which lies on the line that passes through the points of contact of the two tangents drawn to the conic from the other.
(optics)
Any pair of points such that all rays from one are imaged on the other within the limits of validity of Gaussian optics. Also known as conjugate foci.

## Conjugate Points

in optics, a pair of points in an optical system such that if one point represents the object, the other point represents its image. In accordance with the principle of reversibility, the object and image can be interchanged. Strictly speaking, the concept of conjugate points is applicable only in the paraxial regions of ideal (nonaberrational) optical systems (seePARAXIAL RAYS). The concept, however, is often used as an approximation in real systems.

References in periodicals archive ?
In the epipolar equation, the x' and x represent the normalized image coordinates of conjugate points from the left and right images, respectively.
In the new model, the original image point coordinate of conjugate points and focal lengths f are used, and the constraint includes the components relationship in rotation R and baseline B for improving and ensuring the accuracy and stability of relative orientation.
The numerous conjugate points from the left and right image were detected using SURF match model, and the error match points were removed to obtain the reliable relative orientation results as is shown in Figure 3.
1) The 62 conjugate points were used to calculate the parameters of the relative orientation of the stereo image pair.

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