Shade2d
Provides a shadowing effect on a grayscale image.
Access to parameter description
For an introduction to image filters: see section Images Filtering.
This filter is actually a combination of the search of maxima and mean values.
The proposed algorithm is from S. Steinberg, and enhances some object edges in the image. It makes the assumption that:
Note: Because the resulting image is forced to a signed type (containing positive and negative values), it must be visualized by adjusting the data range settings.
See also
Access to parameter description
For an introduction to image filters: see section Images Filtering.
This filter is actually a combination of the search of maxima and mean values.
The proposed algorithm is from S. Steinberg, and enhances some object edges in the image. It makes the assumption that:
- The light is coming on the object from the South-West, South, South-East and East sides of the image,
- The gray levels correspond to the height of the objects.
Note: Because the resulting image is forced to a signed type (containing positive and negative values), it must be visualized by adjusting the data range settings.
See also
Function Syntax
This function returns outputImage.
// Function prototype
std::shared_ptr< iolink::ImageView > shade2d( std::shared_ptr< iolink::ImageView > inputImage, std::shared_ptr< iolink::ImageView > outputImage = NULL );
This function returns outputImage.
// Function prototype. shade_2d( input_image, output_image = None )
This function returns outputImage.
// Function prototype. public static IOLink.ImageView Shade2d( IOLink.ImageView inputImage, IOLink.ImageView outputImage = null );
Class Syntax
Parameters
| Parameter Name | Description | Type | Supported Values | Default Value | |
|---|---|---|---|---|---|
 |
inputImage |
The input image. | Image | Grayscale or Multispectral | nullptr |
 |
outputImage |
The output image. Its dimensions are forced to the same values as the input. If the input data type is unsigned, it is switched to its signed counterpart. | Image | nullptr | |
| Parameter Name | Description | Type | Supported Values | Default Value | |
|---|---|---|---|---|---|
|
input_image |
The input image. | image | Grayscale or Multispectral | None |
|
output_image |
The output image. Its dimensions are forced to the same values as the input. If the input data type is unsigned, it is switched to its signed counterpart. | image | None | |
| Parameter Name | Description | Type | Supported Values | Default Value | |
|---|---|---|---|---|---|
|
inputImage |
The input image. | Image | Grayscale or Multispectral | null |
|
outputImage |
The output image. Its dimensions are forced to the same values as the input. If the input data type is unsigned, it is switched to its signed counterpart. | Image | null | |
Object Examples
std::shared_ptr< iolink::ImageView > polystyrene = ioformat::readImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene.tif" ); Shade2d shade2dAlgo; shade2dAlgo.setInputImage( polystyrene ); shade2dAlgo.execute(); std::cout << "outputImage:" << shade2dAlgo.outputImage()->toString();
polystyrene = ioformat.read_image(imagedev_data.get_image_path("polystyrene.tif"))
shade_2d_algo = imagedev.Shade2d()
shade_2d_algo.input_image = polystyrene
shade_2d_algo.execute()
print( "output_image:", str( shade_2d_algo.output_image ) )
ImageView polystyrene = ViewIO.ReadImage( @"Data/images/polystyrene.tif" );
Shade2d shade2dAlgo = new Shade2d
{
inputImage = polystyrene
};
shade2dAlgo.Execute();
Console.WriteLine( "outputImage:" + shade2dAlgo.outputImage.ToString() );
Function Examples
std::shared_ptr< iolink::ImageView > polystyrene = ioformat::readImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene.tif" ); auto result = shade2d( polystyrene ); std::cout << "outputImage:" << result->toString();
polystyrene = ioformat.read_image(imagedev_data.get_image_path("polystyrene.tif"))
result = imagedev.shade_2d( polystyrene )
print( "output_image:", str( result ) )
ImageView polystyrene = ViewIO.ReadImage( @"Data/images/polystyrene.tif" ); IOLink.ImageView result = Processing.Shade2d( polystyrene ); Console.WriteLine( "outputImage:" + result.ToString() );