Verifies the accuracy of the text in the image.
For each character, the node checks for the existence of a reference character for the expected character class and compares the character from the image to the reference character.
ROI in which the node performs this operation.
The ROI must be a rectangle or rotated rectangle. If the ROI contains multiple contours, each contour is interpreted as a character location. Otherwise the node searches the ROI for the expected characters. Leave this input unwired to use the entire image for this operation.
Coordinates of the bounding rectangle.
Individual shapes that define an ROI.
Object specifying if contour is the external or internal edge of an ROI.
Shape type of the contour.
Relative position of the contour.
OCR session on which the node operates.
To create a session, use the Create OCR Session node.
Source image for the operation.
Expected character values.
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.
Default: No error
Array of expected character values and character patterns.
The node only uses this value if expected string is an empty string.
OCR session on which this node operates.
Reference to the source image.
Array of verification scores for the expected characters.
verification scores is set to 0 for a character if the corresponding character class does not contain a reference character.
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.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported
Web Server: Not supported in VIs that run in a web application