[J,newOrigin] = undistortImage(I,cameraParams) returns an image, J, containing the input image, I, with lens distortion removed. The function also returns the [ x, y ] location of the output image origin.
Intersectionality is the study of intersections between different disenfranchised groups or groups of minorities; specifically, the study of the interactions of multiple systems of oppression or discrimination.
Intersection theory is a mathematical theory, not a sociological one - are you thinking of intersectionality theory? Intersectionality theory basically states that multiple layers of social identity interact with each other to produce new forms of meaning. In common English, what that means is that femininity might mean one thing for an African-American woman and a different thing for a white woman, even though they're both women. It's also often used to describe the multiple forms of oppression or discrimination an individual might face.