Precise Measurement of Holes and EVT Support of Various 3D Sensors

The measurement of holes and the determination of their position is a special challenge. EyeVision 3D software offers precise 3D measurements with more than 40 specialized commands.

In the case of sheet metal components, it is possible to capture the whole component geometry in a high-resolution point cloud by using visual 3D metrology. A precise metrology command set allows correctly defining various measurements in a point cloud and their coordinates in relation to other results with only a few commands.
Typical characteristics such as hole patterns, cut/trimming, and resilience on edge laps of car bodies can also be measured exactly.

For the inspection of weld seams, as well as adhesive beads, EyeVision 3D software uses the ProfileMatch command. Just a simple parametrization allows the evaluation of profiles and issues an analysis of the detected defect. A detailed protocol for all measurement results can be issued with just a few mouse clicks.

With the complete command set of EyeVision software it is possible to configure the application with 2D cameras and 3D sensors. For example, the point cloud can be displayed as 2½D image, and read an embossed or engraved lettering with a 2D OCR module. This is useful when reading DOT code on a tire or stamped numbers in metal.

EVT image processing software supports various 3D sensors of different technologies, including: AT Automation Technology, Gocator from LMI, Basler ToF, Wenglor, QuellTech, ShapeDrive, Zivid, etc (see table below).

3D Technology EyeVision 3D supported Maker
Stereo RealSense
Zivid
Chromasens
Time of Flight Basler ToF
BlueTechnix
Shape-by-Shading ShapeDrive
LMI
Lasertriangulation AT Automation Technology
Wenglor
LMI (Gocator)
VRmagic
QuellTech
3D cameras PhotoFocus

More 3D sensors which will be supported by EyeVision 3D are about to follow.

FSI Advanced Research Exhibiting at SouthTec 2017

Visit FSI Advanced Research in booth # 214 at SouthTec 2017 to learn about the latest in machine vision technologies, including deep learning, 3D, and multispectral and thermographic imaging. FSI brings the right technology, engineering expertise and advanced analytics to help clients achieve quality performance and experience greater value. TD Convention Center, Greenville, SC, October 24-26. For more information, and to register for free, click here.

EyeMeasureEasy

EyeVision software from EVT now offers EyeMeasureEasy (EME), an intuitive image analyzing tool. The user can directly measure and analyze image data with only a few mouse clicks. The tool can be used for applications in microscopy. The features of EME can be extended, so that it can be integrated into a fully automated, industrial inspection process.

With EyeMeasureEasy the user can display live-images, and can save images and load them from memory. There are several different measurement options that can be carried out on those images, such as:

  • Angle including three points or four points
  • Distances between two points
  • Radius of circles including three points or n-points or automatic

The measured results can be shown via a text overlay, list boxes or charts. The measurements can be controlled by the user through “start” and “stop” buttons, or the measurements can be carried out in a free-running measurement.

The camera options can be set directly and the user interface is a design framework for a customized graphic user interface.

01_EyeMeasure-Angle-3-800
02_EyeMeasure-Angle-2-800

03_EyeMeasure-Distance-1-800
04_EyeMeasure-Circle-1-800

EyeVision now supports the Gocator 3D sensor from LMI

EyeScanGo_back_L_EyeVision_support-KopieEyeVision software provides the integrated “brain” of the 3D sensor. EyeVision allows the sensor not only to capture an image but also to use the complete 3D command set of the software to measure, compare and read the 3D point cloud or 2D gray-scale image.

The Gocator is a compact sensor in an industrial housing with a protection class of up to IP67. It has two digital outputs, RS485 Serial and one analogue output (4 – 20 mA). More than one of the Gocator sensor families can be used with effortless configuration and synchronization.
With the EyeVision machine vision software the sensor has various commands available. Starting with the “3D Blob” command which is very versatile and can be used count objects within a point cloud, the software contains commands to measure openings (holes, slots), cylinder, studs (threaded and non-threaded), plane, etc. It has also 3D volumetric tools: volumes, areas, bounding boxes, positions (min, max, centroid), ellipses, orientations, etc.

Additionally, the 3D-software now also has a “RectProbe” command to find edge-points in a certain direction and returning the detected edge. This can be useful for additional measurements on the point cloud. There are also various filter commands such as “Merge”, which merges two point clouds into one, or the filter command “Outlier Removal”, which removes all points that deviate in Z-direction from their neighbors by a certain amount. Also important is the “Voxelgrid” filter, which down-samples a point cloud using a voxel grid and outputs points that are the average of all points inside a voxel. The filter can make unordered point clouds into ordered.

EyeVision software utilizes a graphical user interface. The commands can be drag-and-dropped in a program editor, where the inspection program can be created, even without programming skills.

BGA Inspection with EyeScan AT 3D from EVT

BGA Inspection with EyeScan AT 3D from EVTThe EyeScan AT 3D sensor – together with EyeVision image processing software can inspect the correct position of pins and check for the quality and position of balls on a Ball-Grid-Array. The connectors of BGAs can be inspected with the 3D sensor for various characteristics up to an accuracy of a micrometer (µm).

Thanks to the Scheimpflug-projection, the laser line stays focused and distortion-free. Even in a high-speed application, the captured images have a high resolution, and no lens distortion correction is needed. Every single bump of the BGA is inspected for its size and shape up to a µm-accuracy.

The EyeScan AT utilizes precision laser line measurement (or laser triangulation). The camera views a laser line, which is projected onto the component (in this case: the BGA) and calculates the height information from the laser line profile.

Utilizing a precision blue laser and on board FPGA the EyeScan AT 3D is capable of over 20,000 profiles per second with very high resolution to capture even the finest details. Additionally, the High Dynamic Range algorithm with threefold exposure allows inspection of bright and dark objects in the same scan without loss of speed.

3D image information is processed by the powerful EyeVision software which is programmed though an intuitive drag and drop interface.

EVT’s Advanced Online Training for EyeVision Software

webinar

 Topics and Dates:

Topic: Measurement Technology
  Date: September 13, 2016

Topic: Color Inspection
   Date: September 20, 2016

Topic: Code Reading (part 1)
   Date: September 27, 2016

Starting: for US: 05:00 pm (German Time)
Things needed for the training:
– Internet access & TeamViewer
– Laptop or PC

We will provide you with the EyeVision Software and the TeamViewer Meeting ID before the Training.
Register

EyeScan AT 3D with Blue Laser Line

EyeVision software by EVT now also supports a 3D laser triangulation sensor with blue laser. The new EyeScan AT 3D scanner is especially suitable for scanning metal or metallic surfaces.

AT3D blue BrainLight ringToday’s noncontact 3D scanners include one of two laser types: blue laser or red laser. Most 3D scanners, including EyeScan 3D scanners from EVT, user red laser technology. The new EyeScan AT 3D Blue, however, utilizes optically superior blue laser technology.

The blue-violet Laser has some clear advantages which provide better scan results. Because it has a shorter wavelength than a red laser, a blue laser delivers improved scanning results with higher resolution and up to a 50-percent reduction in data noise. The shorter wavelength creates a smaller laser speckle pattern, generating a sharper depth image. The blue laser is more effective when scanning metal, because a blue laser is narrower and finer than a red laser line.
AT3D_blue_connector
Thanks to 20,000 profiles per second and the new blue laser, even complex component parts and surfaces can be captured with high accuracy. The extremely fast scans are possible due to the short exposure time and the preprocessing of data with a FPGA inside the scanner. The high dynamic range algorithm with triple exposure makes it possible for dark and bright objects to be inspected in one scan, without a decrease in speed.

EyeVision for Inspection of Laser Markings on Medical Products

Schere_mit_DMCMedical products undergo a number of quality and safety inspections and have explicit markings and identification. EyeVision image processing software is often used to inspect markings on medical products. A camera inspection system consisting of an EyeCheck smart camera, which includes EyeVision software, can be integrated permanently into the laser marker head, ensuring an accompanying image capture for verification and validation of the quality.

EyeVision software can read markings such as:

  •  alphanumeric characters such as serial numbers, date specification, etc.
  •  complex codes such as bar codes, 1D and 2D Data Matrix Codes (DMC)
  • company and brand logos

EyeVision software inspects the markings, ensuring consistent quality. Also, the contents of the codes can be inspected. The software includes commands for code reading as well as pattern matching, position, and measurement technology. This is especially important as the code is used for the product identification, traceability, product safety and quality.

The EyeCheck smart cameras are available in various variations and can be equipped according the production process and production line, with diverse sensors and lenses. All EyeCheck smart cameras have one thing in common: the EyeVision software. The software can be mastered in no time at all without special programming skills. Due to the drag-and-drop function and the self-explanatory graphical user interface, inspection programs can be created easily for reading complex codes and characters.