Built-in tools🔗

Overview🔗

The VisionAppster platform comes with a comprehensive set of building blocks we call tools. The built-in tools range from primitive mathematical functions to complex image analysis algorithms. A few selected examples:

Mathematical functions

Control structures

Utilities

Image processing

Image analysis

Access a camera

Deep neural networks

List of all tools🔗

Abs Takes absolute value of a scalar, a matrix or a tensor.
Add Adds up the inputs element by element.
Add images Applies weights to two images, adds the weighted images together and outputs the result.
Add noise Adds simulated white noise to the input image.
Adjust calibration Changes the calibration factors and/or the world frame of an image without changing pixel data.
Adjust points to gradient Adjusts the given points in the input image towards maximum gradients and filters out the points which are surrounded by too similar points.
Align images Adjusts the world frame and calibration data of an image so that the pixels are aligned with reference as if this image was a scaled version of reference.
Analyze blob geometry Calculates geometric properties for labeled objects.
Analyze blob statistics Calulates histograms of blobs in a gray scale image.
Analyze histogram Calculates statistical features from a histogram.
Arithmetic Base class for arithmetic tools.
Automatic target location Attempts to localize a target object on a relatively uniform background and to crop it out of the image.
Automatic target location Attempts to localize a target object on a relatively uniform background and to crop it out of the image.
Balance colors Corrects RGB color balance according to the given scaling factors.
Barcode detection mask A compound tool that splits an image to fixed-size blocks and produces a low-resolution detection mask image by classifying each sub-image.
Barcode probability Calculates the probability that a barcode is present in an image patch.
Begin branch Passes input parameters to alternative branches depending on the branch input.
Begin iterate A starting point for a part of a processing graph that needs to be repeated multiple times with different parameters.
Bin pixels Combines adjacent pixels to produce a lower-resolution and less noisy output image.
Binarize Transforms any gray-level or color image to a binary image using a static gray-level threshold.
Binarize adaptively Transforms any gray-level or color image to a binary image using one of the selected adaptive thresholding algorithms.
Binarize with limits Transforms any gray-level image to a binary image.
Binary function Base class for arithmetic and logic tools that take two input parameters.
Binary morphology Applies morphological operations to binary images.
Blob bounding box Calculates the areas, centroids and bounding boxes of labeled objects.
Boolean logic Performs Boolean logic on inputs a and b.
Bounding box Calculates the axis-aligned bounding box of a set of 2D points.
Calibrate camera Calculates intrinsic calibration parameters (principal point, focal length and radial distortion) of a matrix camera.
Calibrate line-scan camera Calculates intrinsic calibration parameters for a line-scan camera.
Calibrate manually Calculates scaling factors between pixels and world units.
Caliper A compound tool that contains a Profile tool which is connected to a MeasureGapWidths tool.
Collapse array Base class for tools which collapse a dimension from matrices and tensors.
Color distance Transforms input image into a gray-level image.
Color ratio Given a reference color and a color sample, calculates scaling factors suitable for color balancing.
Combine color channels Combines separated color channels to a color image.
Compare Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Complex conjugate Conjugates the input.
Compress image Compresses the pixel buffer of an image.
Convert colors Converts encoded images to RGB or grayscale.
Convert to string Converts anything to a string.
Convert type Changes the data type of the input object or converts a string to a number.
Correct gamma Compresses or expands gray or RGB levels using a non-linear power-law function.
Count Increases a counter and produces a reset signal every time the counter reaches a user-defined maximum value.
Count line crossings Counts the number of times a trajectory or a set of trajectories crosses a line segment.
Crop image Quickly extracts a rectangular portion of an image.
Cryptographic hash Generates a cryptographic hash string from the input string using a hashing algorithm.
Data Input Reads data from a supported data source and pushes it to analysis.
Detect blobs Detects blobs in an image using 4- or 8-connectivity.
Detect boundaries Detects boundaries of connected objects in images and outputs them as a matrix that contains the coordinates of vertices that form a polygon.
Detect boundary shape A compound that combines boundary detection and the shape context to an easy-to-use key point detector.
Detect circles Detects circles in point sets.
Detect corners Detects corners in images.
Detect edges Detects prominent edges in images.
Detect LBP texture This tool is a compound that combines key point finder and local binary patterns to an easy-to-use keypoint and feature vector detector.
Detect lines Detects line segments.
Detect motion Accumulates a model of a static background of a scene with moving objects.
Detect shapes Detects shapes by matching a boundary curve to a known geometric shape or a user-defined shape.
Detection mask A compound tool that splits an image to fixed-size blocks and produces a low-resolution detection mask image by classifying each sub-image.
Divide Divides input a by input b element by element.
Draw edges Detects prominent edges in images.
End branch Merges alternative processing pipelines.
End iterate Collects results produced by an iterated part of a processing graph to a matrix or a table.
Equal Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Equalize histogram Equalizes a histogram by making the gray level distribution as uniform as possible.
Estimate background color Estimates the background color based on the corners of the image.
Expand frame Expands or shrinks the frame by the given margin along coordinate axes.
File system watcher A data source that outputs the path to a file or directory each time a change is detected.
Fill region Replaces pixels inside a rectangle with a constant color.
Filter key points Discards points whose coordinates don't fall inside a rectangular region of interest in world coordinates.
Find barcode Finds locations of barcodes in the specified region-of-interest of the input image.
Find matrix code Finds location of a matrix code in the specified region-of-interest in the input image.
Find QR keypoints Finds location of a QR code and returns 13 key points of the code.
Find threshold Automatically finds a suitable threshold value for binarizing a gray-level image based on its histogram.
Flip image Flips an image horizontally and/or vertically.
Frame to angles Converts the rotation matrix of a coordinate frame into Tait–Bryan angles.
Gate Passes input parameters to outputs if and only if the enabled input is true.
Generate grid Generates a set points that uniformly covers the pixel grid of an image.
Generate QR code Generates image of a QR code which contains the given data string.
Gradient histogram Calculates a magnitude-weighted gradient orientation histogram.
Gray level profile Computes the gray-level profile of any rectangular region.
Greater Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Greater or equal Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Height profile Calculates the height profile of a surface that is illuminated with stripe of light.
Histogram Calculates the grayscale histogram of an image.
Homography Calculates a coordinate frame which maps one set of coordinates into another.
HSV to RGB Converts an HSV image to RGB format.
Huemap Sets the chromacity of a pixel in the output image according to the intensity the corresponding pixel in the input image.
Identity Passes the input value as such.
Image corners Projects the corners of an input image to the XY plane of the world coordinate system.
Image info Takes in an image and outputs various information about the image.
Image sharpness This tool gives a numeric estimate of image sharpness.
Image source Sends image frames received from a camera.
Image to matrix Takes in an image and outputs a matrix.
Image to tensor Takes in an image and outputs a dense tensor in a predefined format.
Invert colors Inverts the intensity of each color channel.
Invert matrix Inverts the input matrix.
JavaScript Runs user-defined JavaScript code in the processing pipeline.
Join images Joins two or more images to a single, possibly bigger image.
Keypoint histogram Calculates the gray-level histogram around a set of key points.
Less Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Less or equal Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Linear filter Applies a linear filter to images.
List directory Lists files in a directory.
Local binary patterns transform Converts each pixel of an input image to a local binary pattern (LBP) code.
Logical AND Performs logical AND operation on inputs a and b.
Logical OR Performs logical OR operation on inputs a and b.
Logical XOR Performs logical XOR operation on inputs a and b.
Map gray levels Maps pixels in the input image to new values in output image according to a lookup table.
Mask image Applies a binary mask to the input image.
Match contours Matches arbitrary boundary shapes using boundary shape detection and rigid 2D matching.
Match key points A superclass for tools that match objects based on key point coordinates and their associated feature descriptors.
Match rigid 2D object Matches key points with the RANSAC algorithm using a geometric model that allows a proper rigid transformation and scaling in two dimensions.
Match textures Matches textures using texture detection and rigid 2D matching.
Matching compound A compound tool that contains a key point detector and a matcher.
Matrix code detection mask A compound tool that splits an image to fixed-size blocks and produces a low-resolution detection mask image by classifying each sub-image.
Matrix code probability Calculates the probability that a matrix code is present in an image patch.
Matrix info Takes in a matrix and outputs various information about the matrix.
Matrix to image Converts a matrix to an image.
Matrix to tensor Converts a matrix to a tensor.
Max Finds the maximum value of the elements of a matrix or a tensor.
Mean Calculates the arithmetic mean of the elements of a matrix or a tensor.
Measure dwell time Measures the time a tracked object is seen.
Measure gap widths Measures gap widths using a gray-level profile.
Measure speed Measures the speed of objects represented by coordinates in points input.
Median filter Applies a median filter to input images.
Min Finds the minimum value of the elements of a matrix or a tensor.
Monochromatize image Changes the colors of an image so that it only contains tones of a single color.
Multiply Multiplies the inputs element by element.
Multiply matrices Multiplies the matrices at inputs a and b.
Negate Negates a numeric or Boolean value, matrix or tensor.
Normalize mean gray level Normalizes an image so that its local average is approximately constant everywhere.
Not equal Compares a numeric value, matrix or tensor a to another numeric value, matrix or tensor b and outputs the result as a Boolean value.
Output external data Writes data to a data link device.
Pixel coordinates to world Projects pixel coordinates to world coordinates.
Position camera Calculates the position of a matrix camera with respect to the world coordinate system.
Position line-scan camera Calculates the position of a line-scan camera with respect to the world coordinate system.
Postprocess boundary A specialized tool used by boundary shape detection to subsample and join boundaries for shape context calculation.
Power Raises the elements in input a to the powers given in input b element by element.
Process YOLO results Converts the output tensor of a YOLO deep learning model to generally usable data types.
Product Calculates the product of the elements of a matrix or a tensor.
Profile to image Generates an image out of any number of one-dimensional signals such as height or gray-level profiles.
Project to virtual view Creates a new view of the world as if looked through a virtual window.
Prune matches Removes matches that have overlapping bounding boxes or too low confidences.
Quantize non-uniformly Given a list of limits in ascending order, finds the smallest limit that is not smaller than the input value and outputs its zero-based index.
Read barcode Reads value of a barcode from a bounding box specified by frame and size.
Read barcode along a line Reads value of a barcode along a line specified by start and end points.
Read digital input A tool that reads data from a digital I/O device and pushes it to processing.
Read image file Reads an image from file and outputs it either as a raw compressed image or as a decoded, processable image.
Read matrix code Reads various formats of matrix codes (2D barcodes).
Region corners Converts a region (coordinate frame and size) to a set of corner points.
Replace coordinate frame Replaces the coordinate frame of the input image with a new coordinate frame without modifying pixels.
Reshape tensor Creates a new tensor that points to the same data as the input tensor, but has a different layout.
RGB to HSV Converts an RGB image to HSV format.
Rotate image Rotates an image about its principal point.
Run ONNX model Runs a machine learning model stored in the ONNX format.
Sample colors Calculates average of color channels in the given region of interest.
Save image Writes images into files.
Scale image Scales an image.
Separate color channels Separates a color image to components, each represented by a gray-level image.
Serialize inputs Takes in a configurable number of asynchronous input events and outputs them using the first-in-first-out principle.
Set color channel Sets a color channel in a color image.
Set intensity range Scales or clamps the gray levels or color channels of an image into a given range.
Shape context Calculates the shape context descriptor for a set of points that describe the shape of an object.
Simplify polyline Reduces the number of vertices in a polyline or polygon.
Sort rows Sorts matrices and tables according to a key.
Std Calculates the standard deviation of the elements of a matrix or a tensor.
Submatrix Extracts a part of a matrix or a table.
Subtract Subtracts input b from input a element by element.
Subtract images Subtracts a reference image from another image and outputs the difference.
Sum Calculates the sum of the elements of a matrix or a tensor.
Synchronize inputs Receives data from multiple asynchronous sources and outputs the received objects in synchronization with the trigger input.
Tensor info Takes in a tensor and outputs various information about the tensor.
Tensor to classification Given a tensor representing classification results, outputs the indices of accepted classes and the corresponding tensor values.
Tensor to image Converts a tensor to an image.
Tensor to matrix Converts a tensor to a matrix.
Timer Produces time stamps.
Track moving objects This tool takes in a set of points representing the locations of an arbitrary number of moving object at a time instant.
Transform coordinates Transforms point coordinates to/from a coordinate frame.
Translate and rotate frame Translates and rotates a coordinate frame or a point to a new location and orientation.
Transpose matrix Transposes the input matrix.
Unary function A base class for functions that have a single input parameter.
Variance Calculates the variance of the elements of a matrix or a tensor.
Vector to image Converts a one-dimensional array of numbers to a gray-level image.
World coordinates to pixels Projects world coordinates to pixel coordinates.
Write digital output Changes the status of digital output lines and writes values to hardware registers.