Initalization and Information

Overview

// enums

enum cv::cuda::FeatureSet;

// classes

class cv::cuda::DeviceInfo;
class cv::cuda::TargetArchs;

// global functions

void
cv::cuda::convertFp16(
    InputArray _src,
    OutputArray _dst,
    Stream& stream = Stream::Null()
    );

bool
cv::cuda::deviceSupports(FeatureSet feature_set);

int
cv::cuda::getCudaEnabledDeviceCount();

int
cv::cuda::getDevice();

void
cv::cuda::printCudaDeviceInfo(int device);

void
cv::cuda::printShortCudaDeviceInfo(int device);

void
cv::cuda::resetDevice();

void
cv::cuda::setDevice(int device);

Detailed Documentation

Global Functions

void
cv::cuda::convertFp16(
    InputArray _src,
    OutputArray _dst,
    Stream& stream = Stream::Null()
    )

Converts an array to half precision floating number.

Parameters:

_src	input array.
_dst	output array.
stream	Stream for the asynchronous version.

See also:

convertFp16

bool
cv::cuda::deviceSupports(FeatureSet feature_set)

checks whether current device supports the given feature

int
cv::cuda::getCudaEnabledDeviceCount()

Returns the number of installed CUDA-enabled devices.

Use this function before any other CUDA functions calls. If OpenCV is compiled without CUDA support, this function returns 0. If the CUDA driver is not installed, or is incompatible, this function returns -1.

int
cv::cuda::getDevice()

Returns the current device index set by cuda::setDevice or initialized by default.

void
cv::cuda::resetDevice()

Explicitly destroys and cleans up all resources associated with the current device in the current process.

Any subsequent API call to this device will reinitialize the device.

void
cv::cuda::setDevice(int device)

Sets a device and initializes it for the current thread.

If the call of this function is omitted, a default device is initialized at the fist CUDA usage.

Parameters:

device

System index of a CUDA device starting with 0.