EasyImage::GainOffset
Transforms an image, applying a gain and offset to all pixels.
Namespace: Euresys::Open_eVision
[C++]
static void GainOffset(
const EROIBW8* sourceImage,
EROIBW8* destinationImage,
float gain,
float offset
)
static void GainOffset(
const EROIBW16* sourceImage,
EROIBW16* destinationImage,
float gain,
float offset
)
static void GainOffset(
const EROIC24* sourceImage,
EROIC24* destinationImage,
EColor gain,
EColor offset
)
Parameters
sourceImage
Pointer to the source image/ROI.
destinationImage
Pointer to the destination image/ROI.
gain
Constant gain. By default (argument omitted) 1, i.e. no change.
offset
Constant offset. By default (argument omitted) 0, i.e. no change.
Remarks
The gain should remain close to 1, and allows contrast adjustment of the image.
The offset can be positive or negative, and allows to adjust the image intensity. The resulting values are always saturated to range [0..255].
For color images, the separate gain and offset values are specified as triple of values stored in a EColor. The default values leave the image unchanged.
Internally, the computations are achieved through fixed-point arithmetic with 5 bits of precision for the fractional part. This can result in loss of precision with small gains.
EasyImage.GainOffset
Transforms an image, applying a gain and offset to all pixels.
Namespace: Euresys.Open_eVision
[C#]
static void GainOffset(
EROIBW8 sourceImage,
EROIBW8 destinationImage,
float gain,
float offset
)
static void GainOffset(
EROIBW16 sourceImage,
EROIBW16 destinationImage,
float gain,
float offset
)
static void GainOffset(
EROIC24 sourceImage,
EROIC24 destinationImage,
EColor gain,
EColor offset
)
Parameters
sourceImage
Pointer to the source image/ROI.
destinationImage
Pointer to the destination image/ROI.
gain
Constant gain. By default (argument omitted) 1, i.e. no change.
offset
Constant offset. By default (argument omitted) 0, i.e. no change.
Remarks
The gain should remain close to 1, and allows contrast adjustment of the image.
The offset can be positive or negative, and allows to adjust the image intensity. The resulting values are always saturated to range [0..255].
For color images, the separate gain and offset values are specified as triple of values stored in a EColor. The default values leave the image unchanged.
Internally, the computations are achieved through fixed-point arithmetic with 5 bits of precision for the fractional part. This can result in loss of precision with small gains.
EasyImage.GainOffset
Transforms an image, applying a gain and offset to all pixels.
Module: open_evision
[Python]
@staticmethod
GainOffset(
sourceImage: EROIBW8
destinationImage: EROIBW8
gain: float
offset: float
) -> None
@staticmethod
GainOffset(
sourceImage: EROIBW8
destinationImage: EROIBW8
gain: float
) -> None
@staticmethod
GainOffset(
sourceImage: EROIBW8
destinationImage: EROIBW8
) -> None
@staticmethod
GainOffset(
sourceImage: EROIBW16
destinationImage: EROIBW16
gain: float
offset: float
) -> None
@staticmethod
GainOffset(
sourceImage: EROIBW16
destinationImage: EROIBW16
gain: float
) -> None
@staticmethod
GainOffset(
sourceImage: EROIBW16
destinationImage: EROIBW16
) -> None
@staticmethod
GainOffset(
sourceImage: EROIC24
destinationImage: EROIC24
gain: EColor
offset: EColor
) -> None
Parameters
sourceImage
Pointer to the source image/ROI.
destinationImage
Pointer to the destination image/ROI.
gain
Constant gain. By default (argument omitted) 1, i.e. no change.
offset
Constant offset. By default (argument omitted) 0, i.e. no change.
Remarks
The gain should remain close to 1, and allows contrast adjustment of the image.
The offset can be positive or negative, and allows to adjust the image intensity. The resulting values are always saturated to range [0..255].
For color images, the separate gain and offset values are specified as triple of values stored in a EColor. The default values leave the image unchanged.
Internally, the computations are achieved through fixed-point arithmetic with 5 bits of precision for the fractional part. This can result in loss of precision with small gains.