OpenCV computeCorrespondEpilines_1

computeCorrespondEpilines_1 is the duplicate of computeCorrespondEpilines_0. Same cv2.computeCorrespondEpilines call, same inputs, same output, byte-for-byte identical implementation aside from the name. The pack generates a node per overload in OpenCV's type stubs, the function declared two signatures, and here you are with two identical nodes. Use the _0 one; this is a spare.

The short version

Stereo-geometry helper: given points in one image of a stereo pair and the 3×3 fundamental matrix F, compute the epipolar line in the other image where each match must lie.

• points (NPARRAY) - (N, 1, 2) or (N, 2) of (x, y) pairs.
• whichImage (INT) - 1 or 2, saying which image the points live in. Getting this backwards gives silently wrong lines, so check it.
• F (NPARRAY) - the fundamental matrix, typically from findFundamentalMat (also in this pack).
• lines (NPARRAY, optional) - out-parameter; skip it.
• Output: nparray - (N, 1, 3) lines (a, b, c) for a*x + b*y + c = 0.

This is real 3D-vision math - structure-from-motion, matching outlier rejection, rectification. In a pure image-gen workflow it's niche, and it assumes you already have point correspondences.

Install

Same as every node in this pack:

cd ComfyUI/custom_nodes
git clone https://github.com/geroldmeisinger/opencv-comfyui

or ComfyUI Manager → "opencv-comfyui". Needs opencv-python-contrib. Watch for the Cannot import name 'guidedFilter' from 'cv2.ximgproc' conflict if multiple OpenCV installs collide. And one honest note: if you landed here because you saw both _0 and _1 in your node search and wondered which to use - either one. They're the same node.