| Face Engine SDK 4.7.0 A face detection, recognition and tracking engine.

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fsdk::ILivenessFlowEstimator Struct Referenceabstract

Liveness flow estimator interface. More...

`#include <ILivenessFlowEstimator.h>`

Inheritance diagram for fsdk::ILivenessFlowEstimator:

## Public Member Functions
virtual Result< FSDKError > | estimate (const fsdk::Image &small, const fsdk::Image frames[], int length, double &score) const noexcept=0
| Check if correct optical flow can be calculated from input images. More...
Public Member Functions inherited from fsdk::IRefCounted
virtual int32_t | retain () noexcept=0
| Increase strong reference count. More...
virtual int32_t | release () noexcept=0
| Decrease strong reference count. More...
virtual int32_t | getRefCount () const noexcept=0
| Get actual strong reference count. More...
virtual int32_t | retainWeak () noexcept=0
| Increase weak reference count. More...
virtual int32_t | releaseWeak () noexcept=0
| Decrease weak reference count. More...
virtual int32_t | getWeakRefCount () const noexcept=0
| Get actual weak reference count. More...

## Detailed Description

Liveness flow estimator interface.

Note
  This estimator is designed for liveness detection. It works with 1 close-range face crop and 10 long-range face crops estimating correctness of optical flow between theese frames.
  Required input images - 96x96 face warp central crops.

See Also
  IWarper for details.

## Member Function Documentation

virtual Result<FSDKError> fsdk::ILivenessFlowEstimator::estimate | ( | const fsdk::Image & | small,
|  | const fsdk::Image | frames[],
|  | int | length,
|  | double & | score
| ) |  | const
| pure virtual noexcept

Check if correct optical flow can be calculated from input images.

Parameters

  [in] | small | face crop.
  [in] | frames[] | array with big face crops.
  [in] | length | array length.
  [out] | score | estimation result.

The documentation for this struct was generated from the following file:

- include/fsdk/Estimators/ILivenessFlowEstimator.h