Block Statistics (G Dataflow)

Reference to the source image.

Cluster that specifies the size, in pixels, of the block that the node uses when calculating statistics. The default size is 32 x 32 pixels.

sizeX

Size of the block in the x dimension.

sizeY

Size of the block in the y dimension.

Boolean that, when TRUE, computes the minimal and maximal pixel values in each block.

Default: FALSE

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

Reference to the source image.

Array of clusters containing the pixel statistics for the data of each block within an image.

Block information is returned from the top left to the bottom right of the image. The size of the array is the product of number of x blocks and number of y blocks.

mean value

Mean pixel value of the block.

standard deviation

Distribution of pixel values relative to the mean value.

minimal value

Smallest pixel value.

maximal value

Largest pixel value.

Number of blocks along the horizontal axis of the image.

Number of blocks along the vertical axis of the image.

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.