GetDistanceTransformMask
Returns an optimal mask for a given type of metrics and
given mask size.
Syntax
IppStatus
ippiGetDistanceTransformMask_<mod>(int
kerSize
, IppiNorm
norm
, Ipp<datatype>*
pMetrics
);
Supported values for
mod
:32s | 32f |
IppStatus
ippiGetDistanceTransformMask(int
maskType
, Ipp32f*
pMetrics
);
Include Files
ippcv.h
Domain Dependencies
Headers:
ippcore.h
, ippvm.h
, ipps.h
, ippi.h
Libraries:
ippcore.lib
, ippvm.lib
, ipps.lib
, ippi.lib
Parameters
- kerSize
- Specifies the mask size as follows: 3 for 3x3 mask, 5 for 5x5 mask.
- norm
- Specifies the type of metrics. Possible values are:
- ippiNormInf(0)
- L∞, Δ = max(|x1- x2|, |y1- y2|),
- ippiNormL1(1)
- L1, Δ = |x1- x2| + |y1- y2|,
- ippiNormL2(2)
- L2, Δ = sqrt((x1- x2)2+ (y1- y2)2)
- maskType
- Distance type.
- pMetrics
- Pointer to the output array to store metrics parameters. The array contains the following number of elements:
- 2
- for 3x3 mask,
- 3
- for 5x5 mask.
Description
This function fills up the output array with metrics parameters
for the given type of metrics and size of mask. The function returns the following
results:
- (1, 1)
- L∞, 3x3 mask,
- (1, 2)
- L1, 3x3 mask,
- (2, 3)
- L2, 3x3 mask,32sdata type,
- (0.955, 1.3693)
- L2, 3x3 mask,32fdata type,
- (1, 1, 2)
- L∞, 5x5 mask,
- (1, 2, 3)
- L1, 5x5 mask,
- (4, 6, 9)
- L2, 5x5 mask,32sdata type,
- (1.0, 1.4, 2.1969)
- L2, 5x5 mask,32fdata type.
For more information, see [Bor86].
For compatibility with the previous versions of the
library the earlier function
ippiGetDistanceTransformMask
replaced by the function ippiGetDistanceTransformMask_32f
in the current version is also
supported.Return Values
- ippStsNoErr
- Indicates no error. Any other value indicates an error or a warning.
- ippStsNullPtrErr
- Indicates an error condition ifpMetricspointer isNULL.
- ippStsSizeErr
- Indicates an error condition ifkerSizehas a wrong value.
- ippStsBadArgErr
- Indicates an error condition ifkerSizeornormhas a wrong value.