ObjectImageRatio
Measures the proportion of the image occupied by objects contained inside the volume of interest of a binary image.
Access to parameter description
For an introduction:
Access to parameter description
For an introduction:
- section Image Analysis
- section Morphometry
- on a 2D image $ IR = 100 \times Ar/T.Ar $
- on a 3D image $ IR = 100 \times V/TV $
- $Ar$ is the object area.
- $T.Ar$ is the total area (area of the mask if provided, else area of the image bounding box).
- $V$ is the object volume.
- $TV$ is the total volume (volume of the mask if provided, else volume of the image bounding box).
Function Syntax
This function returns the outputMeasurement output parameter.
// Function prototype.
ObjectImageRatioMsr::Ptr
objectImageRatio( std::shared_ptr< iolink::ImageView > inputBinaryImage,
std::shared_ptr< iolink::ImageView > inputMaskImage,
ObjectImageRatioMsr::Ptr outputMeasurement = NULL );
This function returns the outputMeasurement output parameter.
// Function prototype. object_image_ratio( input_binary_image, input_mask_image, output_measurement = None )
This function returns the outputMeasurement output parameter.
// Function prototype.
public static ObjectImageRatioMsr
ObjectImageRatio( IOLink.ImageView inputBinaryImage,
IOLink.ImageView inputMaskImage,
ObjectImageRatioMsr outputMeasurement = null );
Class Syntax
Parameters
| Class Name | ObjectImageRatio |
|---|
| Parameter Name | Description | Type | Supported Values | Default Value | |
|---|---|---|---|---|---|
 |
inputBinaryImage |
The input binary image. | Image | Binary | nullptr |
|
inputMaskImage |
The binary image defining the volume of interest. The measurement is computed from voxels having a value of 1 in this image. If it equals null, the computation is performed from all voxels of the input image. It must have same dimensions as the input image. | Image | Binary | nullptr |
 |
outputMeasurement |
The output measurement result. | ObjectImageRatioMsr | nullptr | |
Object Examples
auto polystyrene_sep = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_sep.vip" ); auto polystyrene_mask = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_mask.vip" ); ObjectImageRatio objectImageRatioAlgo; objectImageRatioAlgo.setInputBinaryImage( polystyrene_sep ); objectImageRatioAlgo.setInputMaskImage( polystyrene_mask ); objectImageRatioAlgo.execute(); std::cout << "percentage: " << objectImageRatioAlgo.outputMeasurement()->percentage( 0 ) ;
polystyrene_sep = imagedev.read_vip_image(imagedev_data.get_image_path("polystyrene_sep.vip"))
polystyrene_mask = imagedev.read_vip_image(imagedev_data.get_image_path("polystyrene_mask.vip"))
object_image_ratio_algo = imagedev.ObjectImageRatio()
object_image_ratio_algo.input_binary_image = polystyrene_sep
object_image_ratio_algo.input_mask_image = polystyrene_mask
object_image_ratio_algo.execute()
print( "percentage: ", str( object_image_ratio_algo.output_measurement.percentage( 0 ) ) )
ImageView polystyrene_sep = Data.ReadVipImage( @"Data/images/polystyrene_sep.vip" );
ImageView polystyrene_mask = Data.ReadVipImage( @"Data/images/polystyrene_mask.vip" );
ObjectImageRatio objectImageRatioAlgo = new ObjectImageRatio
{
inputBinaryImage = polystyrene_sep,
inputMaskImage = polystyrene_mask
};
objectImageRatioAlgo.Execute();
Console.WriteLine( "percentage: " + objectImageRatioAlgo.outputMeasurement.percentage( 0 ) );
Function Examples
auto polystyrene_sep = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_sep.vip" ); auto polystyrene_mask = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_mask.vip" ); auto result = objectImageRatio( polystyrene_sep, polystyrene_mask ); std::cout << "percentage: " << result->percentage( 0 ) ;
polystyrene_sep = imagedev.read_vip_image(imagedev_data.get_image_path("polystyrene_sep.vip"))
polystyrene_mask = imagedev.read_vip_image(imagedev_data.get_image_path("polystyrene_mask.vip"))
result = imagedev.object_image_ratio( polystyrene_sep, polystyrene_mask )
print( "percentage: ", str( result.percentage( 0 ) ) )
ImageView polystyrene_sep = Data.ReadVipImage( @"Data/images/polystyrene_sep.vip" ); ImageView polystyrene_mask = Data.ReadVipImage( @"Data/images/polystyrene_mask.vip" ); ObjectImageRatioMsr result = Processing.ObjectImageRatio( polystyrene_sep, polystyrene_mask ); Console.WriteLine( "percentage: " + result.percentage( 0 ) );