SampleImage2d
Performs a subsampling of a two-dimensional image.
Access to parameter description
The SampleImage2d algorithm subsamples an image by an integer factor for the X and Y coordinates. For example, specifying integer factors of 4 and 8 generates an output image retaining the value of one pixel out of four in the X axis direction and one out of eight in the Y axis direction.
See also
Access to parameter description
The SampleImage2d algorithm subsamples an image by an integer factor for the X and Y coordinates. For example, specifying integer factors of 4 and 8 generates an output image retaining the value of one pixel out of four in the X axis direction and one out of eight in the Y axis direction.
See also
Function Syntax
This function returns outputImage.
// Function prototype
std::shared_ptr< iolink::ImageView > sampleImage2d( std::shared_ptr< iolink::ImageView > inputImage, int32_t sampleFactorX, int32_t sampleFactorY, std::shared_ptr< iolink::ImageView > outputImage = NULL );
This function returns outputImage.
// Function prototype.
sample_image_2d( input_image,
sample_factor_x = 2,
sample_factor_y = 2,
output_image = None )
This function returns outputImage.
// Function prototype.
public static IOLink.ImageView
SampleImage2d( IOLink.ImageView inputImage,
Int32 sampleFactorX = 2,
Int32 sampleFactorY = 2,
IOLink.ImageView outputImage = null );
Class Syntax
Parameters
| Class Name | SampleImage2d |
|---|
| Parameter Name | Description | Type | Supported Values | Default Value | |
|---|---|---|---|---|---|
 |
sampleFactorX |
The X axis sampling factor. | Int32 | >=1 | 2 |
|
sampleFactorY |
The Y axis sampling factor. | Int32 | >=1 | 2 |
|
inputImage |
The input image. | Image | Binary, Label, Grayscale or Multispectral | nullptr |
 |
outputImage |
The output image. Its dimensions are equal to the input image dimensions divided by the sampling factor in each direction. | Image | nullptr | |
Object Examples
std::shared_ptr< iolink::ImageView > polystyrene = ioformat::readImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene.tif" ); SampleImage2d sampleImage2dAlgo; sampleImage2dAlgo.setInputImage( polystyrene ); sampleImage2dAlgo.setSampleFactorX( 2 ); sampleImage2dAlgo.setSampleFactorY( 2 ); sampleImage2dAlgo.execute(); std::cout << "outputImage:" << sampleImage2dAlgo.outputImage()->toString();
polystyrene = ioformat.read_image(imagedev_data.get_image_path("polystyrene.tif"))
sample_image_2d_algo = imagedev.SampleImage2d()
sample_image_2d_algo.input_image = polystyrene
sample_image_2d_algo.sample_factor_x = 2
sample_image_2d_algo.sample_factor_y = 2
sample_image_2d_algo.execute()
print( "output_image:", str( sample_image_2d_algo.output_image ) )
ImageView polystyrene = ViewIO.ReadImage( @"Data/images/polystyrene.tif" );
SampleImage2d sampleImage2dAlgo = new SampleImage2d
{
inputImage = polystyrene,
sampleFactorX = 2,
sampleFactorY = 2
};
sampleImage2dAlgo.Execute();
Console.WriteLine( "outputImage:" + sampleImage2dAlgo.outputImage.ToString() );
Function Examples
std::shared_ptr< iolink::ImageView > polystyrene = ioformat::readImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene.tif" ); auto result = sampleImage2d( polystyrene, 2, 2 ); std::cout << "outputImage:" << result->toString();
polystyrene = ioformat.read_image(imagedev_data.get_image_path("polystyrene.tif"))
result = imagedev.sample_image_2d( polystyrene, 2, 2 )
print( "output_image:", str( result ) )
ImageView polystyrene = ViewIO.ReadImage( @"Data/images/polystyrene.tif" ); IOLink.ImageView result = Processing.SampleImage2d( polystyrene, 2, 2 ); Console.WriteLine( "outputImage:" + result.ToString() );