Home Support NI Product Manuals Vision Development Module 2020 Manual

Table Of Contents

Extract LBP Feature Vector (G Dataflow)

Download Manual | Offline Viewer Required
Version:
Last Modified: June 25, 2019

Extracts features from an image using the local binary patterns (LBP) algorithm.

connector_pane_image
datatype_icon

image in

Reference to the source image.

datatype_icon

ROI descriptor

Region within which to search for corners.

datatype_icon

global rectangle

Coordinates of the bounding rectangle.

datatype_icon

contours

Individual shapes that define an ROI.

datatype_icon

ID

Object specifying if contour is the external or internal edge of an ROI.

datatype_icon

Type

Shape type of the contour.

datatype_icon

Coordinates

Relative position of the contour.

datatype_icon

feature extraction options

Input that specifies how the features are extracted from the image.

datatype_icon

grid size

Cluster that specifies the size, in number, of the blocks along X and Y directions that the node uses when extracting the features.

The default size is 1 x 1 block. For example, if the grid size is X = 3 and Y = 5, the image or the ROI is divided into 3 x 5 blocks, 3 in the X direction and 5 in the Y direction.

datatype_icon

X

Grid size in the X-dimension.

datatype_icon

Y

Grid size in the Y-dimension.

datatype_icon

histogram bins

Number of bins per band to use for the object description.

Default: 9

datatype_icon

error in

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

datatype_icon

image out

Reference to the source image.

datatype_icon

feature vector

Extracted features in the image

datatype_icon

error out

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.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

Recently Viewed Topics