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MimResize


Function Map
Syntax
Description
Parameters
- SrcImageBufId
Table: For specifying the source image buffer identifier
- DstImageOrArrayBufId
Table: For specifying the destination buffer identifier
- ScaleFactorX
Table: For specifying the scaling factor (width)
- ScaleFactorY
Table: For specifying the scaling factor (height)
- InterpolationMode
Table: For specifying the mode of interpolation
+ combination: For overscan
Remarks
Compilation information
Synopsis
Resize an image by the specified X- and Y-scale factors or generate the matrix to perform the transformation.
Syntax
void MimResize(
MIL_ID SrcImageBufId, //in
MIL_ID DstImageOrArrayBufId, //in
MIL_DOUBLE ScaleFactorX, //in
MIL_DOUBLE ScaleFactorY, //in
MIL_INT64 InterpolationMode //in
)
Description

This function resizes the source image by the specified factors and stores results in the destination buffer starting from the top-left corner. Alternatively, this function can generate the 3x3 or 3x2 matrix required to perform the transformation using MimWarp().

Note that this function reference has not been updated for a MIL system added during a MIL update. Refer to the MIL system's release note to see which MIL system’s documentation you should use in its place and any possible differences.
Parameters
This function is not supported on the selected boards.
This function reference has not been updated for the selected MIL system. To show the content of this page, choose a second MIL system; refer to the MIL system's release note to see which MIL system’s documentation to choose and any possible differences.
Parameters
SrcImageBufId

Specifies the source image to resize if performing the transformation. This parameter can be set to one of the following values:

function map For specifying the source image buffer identifier
Click to summarizeValue Description MIL system-specific
tooltip (‡)
Click to summarize M_NULL

Specifies to ignore this parameter; this parameter must be set to M_NULL when generating the matrix that you can use with MimWarp() to perform the resizing.

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Click to summarize MIL image buffer identifier

Specifies the identifier of the source image buffer to rotate.

This image buffer must not have a region of interest (ROI) associated with it. Using an image buffer with an ROI will cause an error.

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MIL system specific

The source image buffer must be unsigned monochrome 8- or 16-bit, or M_BGR32 packed.

 ‡ d
DstImageOrArrayBufId

Specifies the destination image buffer or array buffer, depending on whether performing the transformation. This parameter can be set to one of the following values:

function map For specifying the destination buffer identifier
Click to summarizeValue Description MIL system-specific
tooltip (‡)
Click to summarize MIL array buffer identifier

Specifies the identifier of the destination M_ARRAY buffer when generating the matrix.

When generating a warp matrix, this parameter must be given a single-band, 32-bit floating-point buffer that has an M_ARRAY attribute and that has dimensions 3x2, for a first-order polynomial warping, or 3x3, for a perspective polynomial warping. If you pass this parameter a buffer with dimensions 3x2, MimWarp() will assume the third row to be (0, 0, 1) when performing the warping.

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Click to summarize MIL image buffer identifier

Specifies the identifier of the destination image buffer when resizing the source image.

This buffer must not have a region of interest (ROI) associated with it. Using a buffer with an ROI will cause an error.

Note that after performing the operation, the destination image will not be calibrated, even if the source image was calibrated.

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MIL system specific

The destination image buffer must be unsigned monochrome 8- or 16-bit, or M_BGR32 packed.

 ‡ d
ScaleFactorX

Specifies the horizontal scaling factor. This parameter can be set to one of the values below.

function map For specifying the scaling factor (width)
Click to summarizeValue Description
Click to summarize M_FILL_DESTINATION

Specifies to use a scaling factor that resizes the source image to fill the entire width of the destination buffer. When set to M_FILL_DESTINATION, the source image is resized to fill the entire width of the destination buffer.

You can only use this value when resizing an image. In this case, you must pass SrcImageBufId a source image buffer identifier, and not M_NULL.

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Click to summarize Value > 0.0

Specifies the horizontal scaling factor. A value greater than 1.0 enlarges the source image, while a factor less than 1.0 reduces it.

You must specify a specific value for the horizontal scaling factor when only generating the matrix to perform the transformation.

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ScaleFactorY

Specifies the vertical scaling factor. This parameter can be set to one of the values below.

function map For specifying the scaling factor (height)
Click to summarizeValue Description
Click to summarize M_FILL_DESTINATION

Specifies to use a scaling factor that resizes the source image to fill the entire height of the destination buffer. When set to M_FILL_DESTINATION, the source image is resized to fill the entire height of the destination buffer.

You can only use this value when resizing an image. In this case, you must pass SrcImageBufId a source image buffer identifier, and not M_NULL.

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Click to summarize Value > 0.0

Specifies the vertical scaling factor. A value greater than 1.0 enlarges the source image, while a factor less than 1.0 reduces it.

You must specify a specific value for the vertical scaling factor when only generating the matrix to perform the transformation.

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InterpolationMode

Specifies the interpolation mode when resizing the source image. When only generating the matrix, this parameter is ignored and should be set to M_DEFAULT.

This parameter can be set to one of the values below.

function map For specifying the mode of interpolation
Click to summarizeValue Description MIL system-specific
tooltip (‡)
Click to summarize M_DEFAULT

Specifies the default value. When resizing the source image, the default is the same as M_NEAREST_NEIGHBOR + M_OVERSCAN_ENABLE.

When only generating the coefficients matrix, this is the only possible value.

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Click to summarize M_AVERAGE +

Specifies averaging interpolation. No saturation is performed. The scaling factors for the width and height of the source image must be less than or equal to 1.

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Click to summarize M_BICUBIC +

Specifies bicubic interpolation. Saturation is performed according to the type of the destination buffer.

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Click to summarize M_BILINEAR +

Specifies bilinear interpolation. No saturation is performed.

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Click to summarize M_INTERPOLATE +

Specifies interpolated resizing: for zooming = bilinear, for dezooming = averaging. Gives the best speed/result compromise for interpolated resizing. No saturation is performed.

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Click to summarize M_MAX +

Specifies an interpolation based on the maximum pixel value in the specified source image. No saturation is performed. The scaling factors for the width and height of the source image must be less than or equal to 1.

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Click to summarize M_MIN +

Specifies an interpolation based on the minimum pixel value in the specified source image. No saturation is performed. The scaling factors for the width and height of the source image must be less than or equal to 1.

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Click to summarize M_NEAREST_NEIGHBOR +

Specifies the nearest neighbor interpolation. No saturation is performed.

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Combination values for any of the possible values of the InterpolationMode parameter.

You can add one of the following values to the above-mentioned values to specify how to determine the value of a destination pixel when its associated point falls outside the source buffer.

function map For overscan
Click to summarizeCombination value Description MIL system-specific
tooltip (‡)
Click to summarize M_OVERSCAN_CLEAR

Sets the destination pixel to 0.

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Click to summarize M_OVERSCAN_DISABLE

Leaves the destination pixel as is.

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Click to summarize M_OVERSCAN_ENABLE

Uses pixels from the source buffer's ancestor buffer. If the source buffer is not a child buffer or if the point falls outside the ancestor buffer, it leaves the destination pixel as is.

This is the default value.

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MIL system specific

Points falling outside the source image are undefined.

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Click to summarize M_OVERSCAN_FAST

Specifies that MIL will automatically select the overscan that optimizes speed, according to the specified operation and the target system. The overscan could be hardware-specific thereby having a different behavior than the other supported overscan modes.

Note that when using M_OVERSCAN_FAST, the destination pixels in the overscan area are undefined. The pixels can therefore contain different values from one function call to the next, even if the function's parameter values are the same.

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Remark
Compilation information
Header Include mil.h.
Library Use mil.lib; milim.lib.
DLL Requires mil.dll; milim.dll.
NULL PROC NONE FLOAT PROC NONE FILL DESTINATION FILL DESTINATION DEFAULT AVERAGE BICUBIC BILINEAR INTERPOLATE MAX MIN NEAREST NEIGHBOR OVERSCAN CLEAR OVERSCAN DISABLE OVERSCAN ENABLE OVERSCAN FAST