Iimage Interface; Iimage::readsigcapbuffer - Intermec 700 Series User Manual

SECTION 6

IImage Interface

The IImage interface gives the application the capability to acquire images. The
image acquired can be either a raw image as captured by the digital camera or it
can be normalized. A normalized image is presented the same as if the picture
were taken at right angles to the image and at the same distance. The normal-
ized image is commonly used for signature capture applications.
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IImage::ReadSigCapBuffer

Syntax:
Parameters:
IImage::ReadSigCapBuffer (page 6-65)
IImage::ReadSigCapFile (page 6-67)
IImage::ReadImage (page 6-68)
IImage::CancelReadImage (page 6-69)
IImage::Start (page 6-69)
IImage::Stop (page 6-69)
IImage::Open (page 6-70)
IImage::Close (page 6-70)
HRESULT IImage::ReadSigCapBuffer(
ITC_SIGCAP_SPEC *pSigCapSpec, ITC_IMAGE_SPEC *pImgBuffer,
DWORD nMaxBuffSize );
pSigCapSpec [in] Pointer to the structure that identifies the signature
capture region. This structure is defined as follows:
typedef struct tagITCSigCapSpec
{
DWORD dwStructSize;
INT iAspectRatio;
INT iOffsetX;
INT iOffsetY;
UINT uiWidth;
UINT uiHeight;
INT iResolution;
ITCFileFormat eFormat;
DWORD eDepth;
} ITC_SIGCAP_SPEC;
where:
dwStructSize Size, in bytes, of this struct. This is for version control.
iAspectRatio Ratio of the bar code height (linear bar codes) or row
height (2D bar codes) to the narrow element width.
iOffsetX Offset in X direction, relative to barcode center. Positive
values are right of the bar code, negative values to the
left.
iOffsetY Offset in Y direction, relative to barcode center. Positive
values are higher than the bar code, negative values
lower.
uiWidth Width of signature capture image region in intelligent
bar code units.
uiHeight Height of the signature capture image region in
intelligent bar code units.
iResolution Number of pixels per intelligent bar code unit.
700 Series Color Mobile Computer User's Manual
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6-65