EasyImage::HistogramThreshold
Determines an appropriate threshold level based on the histogram contents, using an automatic threshold mode.
Namespace: Euresys::Open_eVision
[C++]
static EHistogramThreshold HistogramThreshold(
const EBWHistogramVector& histogram,
OEV_UINT32 threshold,
float relativeThreshold,
OEV_UINT32 from,
OEV_UINT32 to
)
[[deprecated]]
static void HistogramThreshold(
const EBWHistogramVector* histogram,
OEV_UINT32& threshold,
float& averageOfPixelsBelowThreshold,
float& averageOfPixelsAboveThreshold,
float relativeThreshold,
OEV_UINT32 from,
OEV_UINT32 to
)
Parameters
histogram
Pointer to a vector containing an image histogram.
threshold
reference to the threshold value. Must be set to the appropriate thresholding mode, as defined by EThresholdMode.
relativeThreshold
Relative threshold value, relevant only in the EThresholdMode.Relative mode.
from
Lower bound of the analyzed gray-level range.
to
Upper bound of the analyzed gray-level range.
averageOfPixelsBelowThreshold
Average gray level of the dark pixels (below threshold).
averageOfPixelsAboveThreshold
Average gray level of the light pixels (above threshold).
Remarks
Additionally, returns the average gray levels in the regions below and above the threshold. The threshold level can be computed by analyzing a range of gray levels in the histogram.
EasyImage.HistogramThreshold
Determines an appropriate threshold level based on the histogram contents, using an automatic threshold mode.
Namespace: Euresys.Open_eVision
[C#]
static EHistogramThreshold HistogramThreshold(
EBWHistogramVector histogram,
uint threshold,
float relativeThreshold,
uint from,
uint to
)
[Obsolete]
static void HistogramThreshold(
EBWHistogramVector histogram,
ref uint threshold,
out float averageOfPixelsBelowThreshold,
out float averageOfPixelsAboveThreshold,
float relativeThreshold,
uint from,
uint to
)
Parameters
histogram
Pointer to a vector containing an image histogram.
threshold
reference to the threshold value. Must be set to the appropriate thresholding mode, as defined by EThresholdMode.
relativeThreshold
Relative threshold value, relevant only in the EThresholdMode.Relative mode.
from
Lower bound of the analyzed gray-level range.
to
Upper bound of the analyzed gray-level range.
averageOfPixelsBelowThreshold
Average gray level of the dark pixels (below threshold).
averageOfPixelsAboveThreshold
Average gray level of the light pixels (above threshold).
Remarks
Additionally, returns the average gray levels in the regions below and above the threshold. The threshold level can be computed by analyzing a range of gray levels in the histogram.
EasyImage.HistogramThreshold
Determines an appropriate threshold level based on the histogram contents, using an automatic threshold mode.
Module: open_evision
[Python]
@staticmethod
HistogramThreshold(
histogram: EBWHistogramVector
threshold: int
relativeThreshold: float
from_: int
to: int
) -> EHistogramThreshold
@staticmethod
HistogramThreshold(
histogram: EBWHistogramVector
threshold: int
relativeThreshold: float
from_: int
) -> EHistogramThreshold
@staticmethod
HistogramThreshold(
histogram: EBWHistogramVector
threshold: int
relativeThreshold: float
) -> EHistogramThreshold
@staticmethod
HistogramThreshold(
histogram: EBWHistogramVector
threshold: int
) -> EHistogramThreshold
Parameters
histogram
Pointer to a vector containing an image histogram.
threshold
reference to the threshold value. Must be set to the appropriate thresholding mode, as defined by EThresholdMode.
relativeThreshold
Relative threshold value, relevant only in the EThresholdMode.Relative mode.
from_
Lower bound of the analyzed gray-level range.
to
Upper bound of the analyzed gray-level range.
Remarks
Additionally, returns the average gray levels in the regions below and above the threshold. The threshold level can be computed by analyzing a range of gray levels in the histogram.