PairwiseMatcher

cvcuda.match(set1: nvcv.Tensor, set2: nvcv.Tensor, num_set1: Optional[nvcv.Tensor] = None, num_set2: Optional[nvcv.Tensor] = None, num_matches: Optional[bool] = None, distances: bool = False, cross_check: bool = False, matches_per_point: int = 1, norm_type: Optional[cvcuda.Norm] = None, algo_choice: cvcuda.Matcher = <Matcher.BRUTE_FORCE: 0>, *, stream: Optional[nvcv.cuda.Stream] = None) → tuple[nvcv.Tensor, Optional[nvcv.Tensor], Optional[nvcv.Tensor]]

Executes the Pairwise matcher operation on the given CUDA stream.

See also

Refer to the CV-CUDA C API reference for this operator for more details and usage examples.

Parameters

set1 (nvcv.Tensor) – Input tensor with 1st set of points.
set2 (nvcv.Tensor) – Input tensor with 2nd set of points.
num_set1 (nvcv.Tensor, optional) – Input tensor with number of valid points in the 1st set. If not provided, consider the entire set1 containing valid points.
num_set2 (nvcv.Tensor, optional) – Input tensor with number of valid points in the 2nd set. If not provided, consider the entire set2 containing valid points.
num_matches (bool, optional) – Use True to return the number of matches. If not provided, it is set to True if crossCheck=True and False otherwise.
distances (bool, optional) – Use True to return the match distances.
cross_check (bool, optional) – Use True to cross check best matches, a best match is only returned if it is the best match (minimum distance) from 1st set to 2nd set and vice versa.
matches_per_point (Number, optional) – Number of best matches to return per point.
norm_type (cvcuda.Norm, optional) – Choice on how distances are normalized. Defaults to cvcuda.Norm.L2.
algo_choice (cvcuda.Matcher, optional) – Choice of the algorithm to perform the match.
stream (nvcv.cuda.Stream, optional) – CUDA Stream on which to perform the operation.

Returns

A tuple with output matches, number of matches and their distances.: The number of matches tensor may be None if its argument is False. The distances tensor may be None if its argument is False.

Return type

Tuple[nvcv.Tensor, nvcv.Tensor, nvcv.Tensor]

Caution

Restrictions to several arguments may apply. Check the C API references of the CV-CUDA operator.

cvcuda.match_into(matches: nvcv.Tensor, num_matches: Optional[nvcv.Tensor] = None, distances: Optional[nvcv.Tensor] = None, set1: nvcv.Tensor, set2: nvcv.Tensor, num_set1: Optional[nvcv.Tensor] = None, num_set2: Optional[nvcv.Tensor] = None, cross_check: bool = False, matches_per_point: int = 1, norm_type: Optional[cvcuda.Norm] = None, algo_choice: cvcuda.Matcher = <Matcher.BRUTE_FORCE: 0>, *, stream: Optional[nvcv.cuda.Stream] = None) → tuple[nvcv.Tensor, Optional[nvcv.Tensor], Optional[nvcv.Tensor]]

Executes the Pairwise matcher operation on the given CUDA stream.