Smart Cameras for Embedded Machine Vision

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National Instruments vision software includes hundreds of image

processing and analysis functions. A subset of the tools available in the

Vision Development Module and Vision Builder AI are shown below.

Image Segmentation

NI vision software comes with several options to

segment and partition images into related components.

Segmentation is an important part of many imaging

applications that need to extract certain features or

objects in order to process them further.

Pattern and Geometric Matching

Learn and locate objects and patterns in your

images. The National Instruments patented

matching algorithms locate patterns fast with

very high accuracy.

Bar Code Reader and Grader

Read 1D bar codes as well as 2D codes like Data

Matrix and PDF 417. You can decipher codes

applied through ink jets, thermal transfer, laser

etching, or dot peen.

Spatial Calibration

Using spatial calibration functions, you can

calibrate your image to take accurate, real-world

measurements from images, regardless of camera

perspective or lens distortion.

Image Arithmetic and Logic Functions

Operators perform basic arithmetic and logical

operations on images. Use operators to add,

subtract, multiply, and divide an image with other

images or constants.

Coordinate Systems

Set up coordinate systems to ensure that all your

measurements move with the object within the

field of view.

Image Filters and Frequency Analysis

Frequency filters, such as the fast Fourier

transform (FFT), alter pixel values with respect to

the periodicity and spatial distribution of the

variations in light intensity in the image.

Golden Template Comparison

Find defects in an image by comparing a perfect

(golden) sample to all subsequent samples. Golden

template comparison detects surface defects, label

misprints, and overall quality issues.

Optical Character Recognition/Verification

NI OCR functions use a trainable OCR algorithm

specifically designed to identify and verify all

types of fonts, characters, and symbols despite

poor and inconsistent image quality.

Particle Analysis

Use particle analysis to detect connected regions

or groupings of pixels in an image and make

selected measurements of those regions. Choose

from more than 80 unique measurements that

return data in both real-world and pixel values.

Color Inspection

Color matching quantifies which colors and how

much of each color exist in a region of an image

and uses this information to check if another

image contains the same colors in the same ratio.

Edge Detection

Use the edge detection tools to identify and locate

discontinuities in the pixel intensities of an image.

Find edges to align, measure, or detect features in

the image.

Object Classification

Classification is a tool for identifying an unknown

object by comparing its significant features to a

set of features that represent known samples.

Gauging

Use dimensional measurement or gauging tools to

obtain quantifiable, critical distance measurements

such as distances, angles, areas, line fits, circular

fits, and counts.