I originally wanted to solve the displacement of small-scale moving objects with a single stress, but later I found that even a very small displacement would bring about a huge error or even a wrong solution. It seems that this method is not feasible, we still need to match and know the depth before we can start with the three-dimensional affine transformation ~
- Estimaterigidtransform (): Calculate multiple two-dimensional point pairs or the optimal affine transformation matrix between images (two rows and column X3). h can be partial degrees of freedom, such as consistent shear.
- Getaffinetransform (): Calculate the matrix H (two rows of column X3) between three two-dimensional points. The degree of freedom is 6.
- Warpaffine (): Performs affine transformation on the input image
- Findhomography: calculates the optimal single ing transformation matrix H (three rows of column X3) between multiple two-dimensional points, using the least mean square error or ransac method.
- Getperspectivetransform (): calculates the transmission transformation matrix H between four two-dimensional points (three rows and column X3)
- Warpperspective (): transmits and transforms the input image.
- Perspectivetransform (): Perform transmission transformation on two-dimensional or three-dimensional vectors, that is, perform projection transformation on the input two-dimensional coordinate points or three-dimensional coordinate points.
- Estimateaffine3d: Calculate the optimal three-dimensional affine transformation matrix H between multiple 3D points (3 rows and 4 columns)
- Transform (): converts the n-dimensional vectors of the input, which can be used for Affine Transformation and Image Color transformation.
- Findfundamentalmat: calculates the base matrix H between multiple points.
Quick Solution:
- Question 1: How do I calculate the matrix of the three two-dimensional point-to-point affine transformations?
A: Use getaffinetransform ().
- Question 2: How to calculate the affine transformation matrix between multiple two-dimensional points (using the minimum error criterion )?
A: Use estimaterigidtransform () or findhomography.
- Question 3: how to calculate the transmission transformation between four two-dimensional points?
A: Use getperspectivetransform ().
- Question 4: How do I calculate the affine transformation between multiple 3D points?
A: Use estimateaffine3d.
- Question 5: How do I perform affine transformation on the input image?
A: Use warpaffine ().
- Question 6: How do I perform transmission transformation on the input image?
A: Use perspectivetransform ().
- Question 7: How do I perform an affine transformation on two-dimensional point pairs of input?
A: use transform ().
- Question 8: how to perform projection transformation on the input 3D point pair?
A: Use perspectivetransform ().
