Crate baracuda_cvcuda 

Safe Rust wrappers for CV-CUDA (NVCV) — GPU computer-vision primitives.

CV-CUDA is a separately-installed NVIDIA library; this crate wraps the C API surface (not the C++ one). The workhorses are:

• Resize — bilinear / cubic / area resampling.
• CvtColor — OpenCV-style colorspace conversion (BGR ↔ RGB ↔ YUV ↔ HSV ↔ grayscale).
• ConvertTo — dtype reinterpretation with alpha * x + beta.
• Flip — flip along one or both axes.
• Normalize — (x - base) * scale + shift with optional epsilon (ML normalization).

NVCV tensors are constructed via Tensor::new and reference-counted under the hood; Rust wrappers release their ref on drop.

Modules

NVCVAdaptiveThresholdType

NVCVAdaptiveThresholdType module.

NVCVBorderType

NVCVBorderType module.

NVCVColorConversionCode

NVCVColorConversionCode — opencv-style color conversion selector. Subset — full enum has ~200 values.

NVCVMorphologyType

NVCVMorphologyType module.

NVCVThresholdType

NVCVThresholdType module.

Structs

AdaptiveThreshold

Adaptive threshold operator.

AddWeighted

out = α * in1 + β * in2 + γ with saturation.

AdvCvtColor

Advanced colour-space conversion (code + per-frame spec).

AverageBlur

Box / average blur.

BilateralFilter

Bilateral (edge-preserving) filter.

BndBox

Draw bounding boxes on the output image.

BoxFilter

Unnormalized box filter.

BrightnessContrast

Per-channel brightness + contrast adjustment.

Canny

Canny edge detector.

CenterCrop

Center-crop to a target size.

ChannelReorder

Reorder output channels (e.g. BGR→RGB swap).

ColorTwist

Apply a 3×4 / 4×4 color-transform matrix.

Composite

Alpha-mask compositing (out = fg * mask + bg * (1 - mask)).

Conv2D

2D convolution with a user-supplied kernel.

ConvertTo

Convert-to operator (output = alpha * input + beta, with dtype change).

CopyMakeBorder

Constant / reflect / replicate border around input.

CropFlipNormalizeReformat

Fused crop + flip + normalize + layout-reformat — the classic ML video-preproc bundle.

CustomCrop

Arbitrary-rect crop.

CvtColor

Color-conversion operator.

Erase

Erase rectangular regions (random or fixed content).

FindContours

Find contours of binary regions.

Flip

Flip operator. flip_code: 0 = vertical, 1 = horizontal, -1 = both.

GammaContrast

Gamma-correction operator.

Gaussian

Separable Gaussian blur.

GaussianNoise

Gaussian noise.

GuidedFilter

Guided filter — edge-preserving filter that uses guide to steer smoothing of input.

HQResize

High-quality resize for ML preprocessing (separable with anti-aliasing).

HausdorffDistance

Hausdorff distance between two point sets.

Histogram

Compute per-channel histograms.

HistogramEq

Histogram equalization.

Inpaint

Mask-based inpainting.

JointBilateralFilter

Joint bilateral filter — uses a guide image’s edges to preserve structure while smoothing the primary input.

Label

Connected-component labeling.

Laplacian

Laplacian edge filter.

MedianBlur

Median blur.

MinAreaRect

Minimum-area rectangle around each contour.

MinMaxLoc

Find min/max values + locations in a tensor.

Morphology

Erosion / dilation / open / close.

MotionBlur

Directional motion blur.

NVCVFloat2

NVCVFloat2 (FFI binding).

NVCVSize2D

NVCVSize2D (FFI binding).

NonMaxSuppression

Non-maximum suppression over detection boxes + scores.

Normalize

Normalize operator (ML pre-processing: (x - base) * scale + tweaks).

Osd

On-screen display — draw arbitrary text/line/rect overlays.

Pad

Pad an image by top / left border amounts.

PadAndStack

PadAndStack — pad a VarShape batch into a fixed-shape tensor.

PairwiseMatcher

Pairwise feature-descriptor matcher (e.g. for SIFT output).

PillowResize

Pillow-style high-quality resize.

RandomResizedCrop

Random-resized-crop — the PyTorch-style augmentation.

Reformat

Reformat layout (e.g. NHWC → NCHW).

Remap

Remap by sampling a pixel-offset map (optical-flow, undistort).

Resize

Resize operator. Reusable across submissions.

ResizeCropConvertReformat

Fused resize + crop + dtype-convert + layout-reformat.

ResizeVarShape

Resize on a variable-shape image batch (different sizes per item).

RhomboidNoise

Rhomboid noise.

Rotate

Rotate around image center by an angle in degrees.

RotateBatch

Per-frame rotation of a batch tensor.

SaltAndPepperNoise

Salt-and-pepper noise.

Sift

SIFT — scale-invariant feature transform keypoint extractor.

Stack

Stack a VarShape image batch into a single tensor.

Tensor

An NVCV tensor handle. Drop releases the ref.

Threshold

Threshold operator (binary / trunc / tozero / Otsu / triangle).

WarpAffine

2×3 affine warp (output = input @ M).

WarpAffineBatch

Per-frame 2×3 affine warp across a batch tensor.

WarpPerspective

3×3 perspective (projective) warp.

Enums

Interpolation

Interpolation selector for resampling operators.

Functions

probe

Verify CV-CUDA is loadable on this host.

Type Aliases

Error

Error type for CV-CUDA operations.

Result

Result alias.