MocrModifyFont

Board	Supported
Host System	Yes
V4L2	Yes
Clarity UHD	Yes
Concord PoE	No
GenTL	Yes
GevIQ	Yes
GigE Vision	Yes
Indio	No
Iris GTX	Yes
Radient eV-CL	Yes
Rapixo CL	Yes
Rapixo CoF	Yes
Rapixo CXP	Yes
USB3 Vision	Yes

Invert or resize the font of an OCR font context to match the target image characters.

Syntax

void MocrModifyFont(
    AIL_ID    FontContextOcrId,  //out
    AIL_INT64 Operation,         //in
    AIL_INT64 OperationFlag      //in
)

Description

This function physically modifies the polarity and sizing of the font of an OCR font context.

Parameters

FontContextOcrId (out, AIL_ID)

Specifies the identifier of the OCR font context to modify.

Operation (in, AIL_INT64)

Specifies the type of operation to perform. This parameter can be set to one or more of the following values:

For specifying the type of operation

Value	Description
M_INVERT	Physically inverts the character representation of the font (for example, if the foreground is white, this will change it to black).
M_RESIZE	Scales the font.

This operation physically changes the size of the characters of the font to match the target character size (M_TARGET_CHAR_SIZE_X and M_TARGET_CHAR_SIZE_Y). Once performed, all of the font's specifications, which were set at allocation (MocrAllocFont), are modified to this new size.

Note that changing the size of the font permanently in the OCR font context can save time when compared to resizing the font before each read/verify operation. Increasing the size of the font might be slower because the resize time might be less than the additional processing time required during a read or verify operation to find characters of a larger font. |

OperationFlag (in, AIL_INT64)

Specifies the interpolation mode for the function. This parameter can be set to one of the following:

For specifying the interpolation mode

Value	Description
M_DEFAULT	Same as M_BILINEAR.

Note that if theOperation parameter is set to M_INVERT, this parameter should be set to M_DEFAULT. No interpolation is done with M_INVERT. | | M_BICUBIC | Specifies bicubic interpolation. The new value is determined by taking a weighted average of the 16 values (4x4) that surround the source point. Note that the sum of the weights used for bicubic interpolation might be greater than one. If this occurs and the result reflects an overflow or underflow, the result is saturated. | | M_BILINEAR | Specifies bilinear interpolation. The new value is determined by taking a weighted average of the 4 values (2x2) that surround the source point. | | M_NEAREST_NEIGHBOR | Specifies nearest neighbor interpolation. The new value is that of the pixel closest to the source point. |