EasyImage::LinearTransform

Applies a general affine transformation.

Namespace: Euresys::Open_eVision

[C++]

void LinearTransform(
   EROIBW8* sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   EROIBW8* destinationImage,
   int interpolationBits
)

void LinearTransform(
   EROIBW16* sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   EROIBW16* destinationImage,
   int interpolationBits
)

void LinearTransform(
   EROIC24* sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   EROIC24* destinationImage,
   int interpolationBits
)

Parameters

sourceImage

Pointer to the source image/ROI.

Axx

See formula below.

Axy

See formula below.

Ayx

See formula below.

Ayy

See formula below.

destinationImage

Pointer to the destination image/ROI.

interpolationBits

Number of bits of accuracy for interpolation. Allowed values are 0 (no interpolation, nearest neighbor), 4 (linear interpolation) or 8 (cubic interpolation).

Remarks

An affine transformation is an important class of linear 2D geometric transformations which maps variables (e.g. pixel intensity values located at position (X_Src, Y_Src) in an input image) into new variables (e.g. (X_Dst, Y_Dst) in an output image) by applying a linear combination of translation, rotation, scaling and/or shearing (i.e. non-uniform scaling in some directions) operations.
The parameters of the EasyImage::LinearTransform function are the coefficients of the affine equations below:

X_Dst = A_xxX_Src + A_xyY_Src + A_x

Y_Dst = A_yxX_Src + A_yyY_Src + A_y

EasyImage.LinearTransform

Applies a general affine transformation.

Namespace: Euresys.Open_eVision

[C#]

void LinearTransform(
   Euresys.Open_eVision.EROIBW8 sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   Euresys.Open_eVision.EROIBW8 destinationImage,
   int interpolationBits
)

void LinearTransform(
   Euresys.Open_eVision.EROIBW16 sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   Euresys.Open_eVision.EROIBW16 destinationImage,
   int interpolationBits
)

void LinearTransform(
   Euresys.Open_eVision.EROIC24 sourceImage,
   float Axx,
   float Axy,
   float Ax,
   float Ayx,
   float Ayy,
   float Ay,
   Euresys.Open_eVision.EROIC24 destinationImage,
   int interpolationBits
)

Parameters

sourceImage

Pointer to the source image/ROI.

Axx

See formula below.

Axy

See formula below.

Ayx

See formula below.

Ayy

See formula below.

destinationImage

Pointer to the destination image/ROI.

interpolationBits

Number of bits of accuracy for interpolation. Allowed values are 0 (no interpolation, nearest neighbor), 4 (linear interpolation) or 8 (cubic interpolation).

Remarks

X_Dst = A_xxX_Src + A_xyY_Src + A_x

Y_Dst = A_yxX_Src + A_yyY_Src + A_y