Image Analysis Tools

Transcription

1 Image Analysis Tools Powerful, flexible and open vision software tools Open-minded about any image acquisition and interface technology IEEE1394 -Firewire- GigE Vision USB 2.0 Frame grabbers evision TM EasyImage TM - EasyColor TM - EasyObject TM - EasyMatch TM - EasyFind TM EasyGauge TM - EasyOCV TM - EasyOCR TM - EasyBarCode TM - EasyMatrixCode TM info@euresys.com Copyright 2007 Euresys s.a. Belgium. Euresys and EureCard are registred trademarks of Euresys s.a. Belgium. Other product and company names listed are trademarks or trade names of their respective manufacturers. Euresys reserves the right to modify product specifications and price without previous notice.

2 evision TM Contents evision TM General Features 3 Development Environments 4 Operating Systems 4 evision TM Libraries Foundation, Easy TM 5 evision TM Integration Tools 6 EasyAccess TM 6 EasyMultiCam TM 7 evision Evaluator TM 7 evision TM General-purpose Libraries 8 EasyImage TM, image processing 8 EasyColor TM, color calibration & transformation 10 EasyObject TM, blob analysis 11 EasyMatch TM, standard pattern matching 12 EasyFind TM, geometric template matching 13 EasyGauge TM, measurement and dimension control 14 evision TM Mark Inspection Libraries 15 EasyOCV TM, Optical Character Verification 15 EasyOCR TM, Optical Character Recognition 16 EasyBarCode TM, bar code reading 17 EasyMatrixCode TM, 2D code reading 18 evision TM Ordering Information 20 2

3 evision TM evision TM Powerful, flexible and open vision software tools General Features evision forms a rich suite of reliable, powerful and flexible software tools tailored for industrial vision. It contains three ranges of libraries (DLLs), ActiveX controls and.net components dedicated to image processing and analysis: General-purpose Libraries EasyImage - EasyColor - EasyObject - EasyMatch - EasyFind - EasyGauge Mark Inspection Libraries EasyOCV - EasyOCR - EasyBarCode - EasyMatrixCode Open-min ded about any image acquisition and interface technology evision is open to any image acquisition and interface technology. The library suite is able to process given-format images available in the host memory, whatever their origin: frame grabber or standard-link camera (e.g. IEEE Firewire-, GigE Vision, USB 2.0). Open, well documented and easy to understand due to their structure, the evision tools quickly integrate into any application requiring image processing or analysis. evision allows to develop an application under the most up-to-date operating systems and programming environments, including.net. The evision libraries fully exploit the power of the processor of the PC and are optimized for MMX technology. Open to any image acquisition and interface technology Reliable, flexible and powerful Fast due to optimization for MMX Sub-pixel measurement accuracy Easy to learn and use Rapid application prototyping Compatible with Windows (2000, XP, XP Embedded and 2003 server) Linux (RedHat 8.0) Compatible with Microsoft Visual Basic.NET, Visual Basic, Visual C++ Borland C++ Builder and Delphi 3

4 General Features Development Environments evision offers a wide range of up-to-date programming environments allowing to develop an application in a preferred environment. evision is compatible with Microsoft Visual Basic.Net, Microsoft Visual Basic, Microsoft Visual C++, Borland C++ Builder and Borland Delphi. The evision libraries fully exploit the power of the processor of the PC and are optimized for MMX technology. evision Language Using... O.S. Environment Version C++ C++ classes Windows MS Visual Studio 6.0,.NET,.NET 2003 Borland C++ Builder 5.0 and 6.0 Linux gcc 2.96 and 3.2 Pascal ActiveX controls Windows Borland Delphi 5.0, 6.0, 7.0 Visual Basic ActiveX controls Windows MS Visual Studio 6.0 Visual Basic.NET.NET objects Windows with.net MS Visual Studio.NET,.NET 2003 C#.NET objects Windows with.net MS Visual Studio.NET,.NET 2003 Operating Systems: Windows and Linux Euresys maintains the compatibility with a large range of operating systems. evision runs under Windows 2000, XP, XP Embedded, 2003 server and Linux. Euresys customers can combine the ease-of-use of the MultiCam driver and the evision software tools with the cost-effectiveness of Linux. evision is available under Linux RedHat 8.0.With Linux RedHat 7.3 use evision 6.6 evision Windows 2000 XP XP mbedded Supported: Not supported: a - Linux 2003 RH80 Integration Tools EasyAccess a a a a a EasyMultiCam a a a a a Foundation Library Easy a a a a a General Purpose Libraries EasyImage a a a a a EasyColor a a a a a EasyObject a a a a a EasyGauge a a a a a EasyMatch a a a a a EasyFind a a a a a Mark Inspection Libraries EasyOCR a a a a a EasyOCV a a a a a EasyBarCode a a a a a EasyMatrixCode a a a a a Licensing License Mediator a a a a a 4

5 General Features Easy TM Gray level and color images External files (tiff, bmp, jpg) Nested region-of-interest management 3D rendering of gray level and color images Execution time measurement Error tracing Drawing The Easy library gathers general-purpose features that are used in any of the other evision components. It handles image data representation and storage, as well as linear data such as image profiles, projections, contours. Providing facilities for graphical interaction, Easy handles the required drawing and cursor tracking operations. The Easy objects include image objects, ROI objects and vector objects. Image objects are used to handle images (arrays of pixels) in memory and/or external files and display them. ROI objects delimit rectangular areas from images. Vector objects allow to store rows of pixels and ancillary objects dealing with physical measurement units. Image The evision images are the building blocks of the Easy library. They are used by all other components of evision. 8-bit gray level image 24-bit true color image 16-bit color image 16-bit gray level image 15-bit color image 32-bit color image Region of interest (ROI) In an evision image, a Region of Interest is a rectangular zone defined by an origin point, a width and a height. An image may accommodate several ROIs, which are organized in a hierarchical way to manage and apply common features or actions (move, delete,...) to ROIs. 8-bit gray level ROI 16-bit gray level ROI 24-bit color ROI Vector An evision vector is a one-dimensional array of pixels taken from an image (profile or contour). To each image object corresponds a compatible vector object. 8-bit gray level vector 16-bit gray level vector 32-bit gray level vector 24-bit color vector 5

6 evision TM Image Analysis Tools Integration Tools EasyAccess and EasyMultiCam assist you to easily and quickly build your application. EasyAccess allows rapid application development and generates the program for you. EasyMultiCam is the link between evision and the Euresys frame grabbers. These two libraries are included for free with evision. EasyAccess TM Rapid application prototyping Easy libraries demonstration Code generation Training assistant For development, you can choose the user-friendliness of ActiveX or the power of C++. In both cases, EasyAccess, our user interface and code generator, will help you to find the image processing function you need and will write the program for you. Rapid application development EasyAccess takes advantage of the intuitive graphical user interface to give you a quick, easy and interactive access to the outstanding features of evision libraries. All the functions may be called through menus and dialog boxes. The result is immediately apparent and the code corresponding to the action taken is added to a script that can be inserted into your application. 6

7 Integration Tools EasyAccess Training Assistant For your first steps with evision, EasyAccess provides a helpful training assistant offering several lessons for each library. These lessons show in a didactic way the process to follow to solve practical vision problems. Many images and samples are available. EasyMultiCam TM Understand the MultiCam cluster concept Cluster protection modes Triggering modes MultiCam driver for EureCards integration Multiple boards, multiple cameras Full driver control Seamless acquisition control Powerful multiple buffering The EasyMultiCam library is a collection of classes derived from the evision image classes. EasyMultiCam is the link between evision and the MultiCam driver. MultiCam is the name given to the software layer enabling the operation of any Euresys frame grabber or frame processor. MultiCam provides an efficient and easy-to-use abstraction layer of the hardware functionality. MultiCam allows defining channels linking cameras to buffers in the PC memory. EasyMultiCam allows different protected cluster modes ensuring the inalterability of processed images. A cluster is a set of image buffers related to the same camera. EasyMultiCam also manages different trigger modes (hardware, software, consecutive, repeat, combined and same). 7

8 evision TM General-purpose Libraries These libraries are suitable for image pre-processing such as image enhancement, noise reduction, alignment and for image analysis such as surface analysis, quality control, measurement on gray-scale and color images. They bring all the robustness and accuracy required for the industrial environment. evision proposes a range of six general-purpose libraries: EasyImage TM, image processing EasyColor TM, color calibration and transformation EasyObject TM, blob analysis EasyMatch TM, standard pattern matching EasyFind TM, geometric template matching EasyGauge TM, measurement and dimension control EasyImage TM Convolutions and morphology Geometric transformations Image statistics Image processing Image enhancement Image calibration Presence / Absence check EasyImage includes gray level and color image processing functions for tasks such as enhancement and restoration by linear or non-linear filtering, geometric transformations for registration, histogram analysis for thresholding These operations are usually performed as pre-processing steps to improve the image quality and obtain a good contrast between the background and the objects of interest. 8

9 General-purpose Libraries EasyImage 16-bit accuracy processing evision is able to process directly images in a 16-bit format. This feature allows to benefit from the accuracy of the images coming from 10 or 12 bits cameras and to compute intermediate results with appropriate precision. Intensity scale transforms Geometric transforms Noise reduction by integration Thresholding Histograms Conversions Arithmetic and logic operations Contouring Vector operations Convolution (Linear Filtering) Projections... Morphology (Non-linear Filtering) Statistics 9

10 General-purpose Libraries EasyColor TM Fast conversion to 11 color spaces Color segmentation Color verification Color calibration and transformation Food inspection Printing PCB inspection EasyColor includes color-enabled functions for color image processing and support for alternate color systems. The supported color systems are RGB, XYZ, L*a*b*, L*u*v*, YUV, YIQ, ISH, LSH, VSH, LCH and YSH. EasyColor provides efficient means to convert images between these systems and to transform between color and gray level images. This component is complementary to EasyImage. Colorimetric systems conversions Color calibration Color image segmentation Color thresholding Gray level to color transforms... 10

11 General-purpose Libraries EasyObject TM Image segmentation Object labelling Geometric feature extraction Blob analysis Surface inspection Packaging inspection Object location EasyObject is used for blob analysis that is obtaining information about the distinct objects that are present in an image. The processing is based on connected component labelling, to isolate and identify the objects. Then, various geometric features of the objects, such as the area or ellipse of inertia parameters, are computed and the objects are sorted and selected with respect to these features. Blob analysis is a convenient way to locate objects even without any previous knowledge of their shape, size and position, to measure these characteristics and discriminate between them. Holes management EasyObject allows the inspection of holes in defined objects. Holes are managed as objects themselves benefiting from the same geometrical features (area, gravity center, inertia moment, Feret box,...). EasyObject library manages the relationship between objects and holes defining parent object for holes. Calculable features range average or deviation : Area, gravity center (X or Y) Centroid (X or Y) Limit center (X or Y), limit width, limit height Feret center (X or Y), feret width, feret height, feret angle Ellipse width, ellipse height, ellipse angle Convex hull Class, contour (X or Y) Pixel (min, max, gray variance or gray average) 45, 22 or 68 degrees (limit center X, limit center Y, width, height) Sigma (X, Y, XY, XX or YY), largest run. Image segmentation Connected components labeling Computation of numerous geometric features Powerful blob selection and sorting Efficient run-length coded representation... 11

12 General-purpose Libraries EasyMatch TM Gray level and color images Rotation and scaling Don't care areas Standard pattern matching Die & wire bonding Fiducial alignment Printing EasyMatch locates templates previously shown to the system and arbitrarily positioned in an image. Pattern matching is a convenient and straightforward way to accurately find the location of one or several instances of a known object. Variable accuracy, up to sub-pixel level Multiple pattern occurrences Translation, rotation & isotropic/anisotropic scaling Non-square pixels management... 12

13 General-purpose Libraries EasyFind TM Fully automatic Fast and robust Rotation and scaling invariant High tolerance to pattern degradation Don t care areas User-defined pivot point Geometric template matching Fiducial alignment Die & wire bonding PCB inspection Printing industry Based on a feature point technology, EasyFind is designed to find one or more occurrences of a given pattern in a larger image, featuring fast processing and improved robustness compared to classical algorithms. EasyFind has a high tolerance to pattern degradation due to noise, blur, occlusion, missing parts, varying illumination conditions. With an adjustable accuracy up to sub-pixel level, EasyFind provides a very precise, rotation and scaling invariant, alignment. It supports don t care areas. This feature allows creating complex pattern shapes. EasyFind is easily integrated into any application, requiring no knowledge of machine vision concepts. Rotation Scaling Occlusion Feature point technology Feature-point-based means that EasyFind, instead of comparing the pattern to the sample image pixel-wise, carefully selects salient features in the pattern, so that it only matches the areas that convey information. This allows faster processing and improves robustness. Typical performance figures These performances are calculated finding a contrasted pattern 150x150 pixels large (interpolation enabled) Translation: 3-sigma static repeatability: Rotation: Scaling: 1/75th of a pixel Linearity: 1/30th of a pixel 3-sigma static repeatability: insignificant Linearity: 1/4 degree 3-sigma static repeatability: insignificant Linearity: 1/2 percent 13

14 General-purpose Libraries EasyGauge TM Sub-pixel point location and edge fitting Highly accurate and robust Position, orientation, size, curvature distances Advanced calibration Multiple gauge models Graphical model edition Measurement and dimension control Gauging applications Calibration metrology Assembly inspection EasyGauge is a second-generation measurement and dimension control library for use in gauging applications. By relying on proven sub-pixel edge detection and least squares fitting algorithms, it allows determining the position, orientation, curvature, size of manufactured parts with an excellent accuracy. Robustness is ensured by powerful edge-point selection mechanisms that are intuitive and easy to tune, allowing measurement in cluttered images. In addition to these state-of-the-art features, EasyGauge also supports adjustment of parallel sides, thus providing means of measuring thickness of flat or bent objects, as well as precise location of corners. Advanced calibration EasyGauge has advanced built-in calibration capabilities to transparently convert pixel measurements to physical units; this relieves the user of the need to convert coordinates. Non-square pixels and rotated coordinate axis are supported. EasyGauge also provides means to determine and correct perspective and optical distortion, with no performance loss. Gauge grouping EasyGauge supports grouping of the measurement gauges and lets these groups track the measured items in the image. These can freely translate and/or rotate while the probes are repositioned accordingly. Derived measurements such as distances between feature points can then be computed. Typical performance figures These performances are calculated processing an image with a resolution of 20 pixels per mm. Point location: Translation 3-sigma static repeatability: 2 µm (1/20th of a pixel) Linearity: 3 µm (1/15th of a pixel) Model fitting: Translation 3-sigma static repeatability: 1 µm (1/50th of a pixel) Size Rotation Linearity: 1.5 µm (1/30th of a pixel) 3-sigma static repeatability: 1 µm (1/50th of a pixel) 3-sigma static repeatability: 1/100th of a degree Linearity: 1/50th of a degree 14

15 evision TM Mark Inspection Libraries evision includes a range of four Mark Inspection libraries: EasyOCV TM, Optical Character Verification EasyOCR TM, Optical Character Recognition EasyBarCode TM, bar code reader EasyMatrixCode TM, Data Matrix code reading These libraries are robust, automatic and support a large range of fonts, standards or symbol types. EasyOCV TM Comprehensive automatic training Accurate built-in calibration Grayscale analysis Optical character verification Mark inspection Label inspection Lot mixing verification EasyOCV is an optical character verification tool used for mark inspection. It provides automatic training of the model, adjustable acceptance levels and a robust gray-scale analysis. EasyOCV is suitable for various mark inspection and label printing verification applications, for PCB inspection, for LCD inspection or for the detection of mixed lots. EasyOCV has been designed for on-line verification. It can detect a blurred, misaligned, distorted or double mark, extra or missing ink, missing characters or reversed mark as well as contrast problems. Text and Character-level inspection Contrast, position, shape defect detection Allowed text translation, rotation, character translation Statistical Training... 15

16 Mark Inspection Libraries EasyOCR TM Teachable system Reliable and robust recognition Size invariance Optical character recognition Part identification Wafer identification Serial number verification EasyOCR is a font-dependent printed character reader based on a template matching algorithm. It allows training on the font to be recognized by showing sample images of all possible characters. For this reason, it is able to read any kind of short text (serial numbers, labels ) such as those found in industrial environments. The training phase uses an interactive utility to show samples of the characters and store them in a font file. Such a font editor is available, ready-made, in EasyAccess. Anyway, EasyOCR provides the means for you to write your own, custom, font editor. EasyOCR provides three standard fonts: OCR-A, OCR-B and Semi. This avoids a training phase to recognize a text using one of these fonts. Trained character fonts Broken character reconstruction Touching character separation Pre-defined fonts... 16

17 Mark Inspection Libraries EasyBarCode TM Automatic symbology detection Very fast and robust Full support of many symbologies Bar Code reader Product identification Bar code verification Symbologies identification EasyBarCode is a library dedicated to automatically locate and read bar codes. Bar codes encode short character string and are widely used for marking and identifying goods. EasyBarCode is able to identify and read a wide range of standard commonly used symbologies as well as additional symbologies. EasyBarCode automatically locates the bar code symbol in the image. Moreover, for prototyping or special cases, an advanced manual location mode is also available. Supported symbologies: Standard symbologies: Code 128 Codabar MSI Code 39 Code 2/5 5 Interleaved UPC A EAN 128 EAN 13 UPC E Additional symbologies: Code 32 Plessey Code 2/5 5 Bars IATA Code 39 Extended Telepen Code 2/5 5 Bars Industry Code 39 Reduced ADS Anker Code 2/5 5 Bars Compressed Code 412 SEMI Binary code Code 2/5 5 Bars Inverted Code 93 Code 11 Code BCD Matrix Code 93 Extended Code 13 Code C.I.P. Code STK Code 2/5 3 Bars Datalogic Ean 8 IBM Delta Distance A Code 2/5 3 Bars Matrix Barcode translation, rotation and scaling support Automatic compensation of illumination changes Direct contrast (black on white) and inverse contrast (white on black) support Checksum validation... 17

18 Mark Inspection Libraries EasyMatrixCode TM Robustness to overcome demanding environments Very fast operation Automatic code detection Error detection and correction Data Matrix 2D code reading Part identification Serial number verification Data Matrix codes are widely used for parcel tracking and part identification in the semiconductor, pharmaceutical and mechanical industries. EasyMatrixCode is a fully automatic reader of 2D Data Matrix codes. It recognizes a symbol of any size, contrast, location and orientation in a single operation. As an automatic library, a learning phase is not required but is an option. In addition, characteristics of the Matrix Code may be set manually allowing to restrict the search and thus to accelerate the process. The characteristics are for example: family of the Matrix Code, number of cells, black cells on white background or reverse, flipping allowed or not, Error detection and correction algorithms are used to provide a faithful reading. Impressive robustness to noise, blur and distortion Rotation and flipping invariant Scaling up to a minimum size (min. cell 3X3 pixels) Contrast invariant ECC200, ECC000, ECC050, ECC080, ECC100 and ECC140 are supported Automatic compensation for illumination changes Print quality verification 18

19 Mark Inspection Libraries Robustness EasyMatrixCode is a library to be used in the more demanding situation. It has been improved to be able to answer the more difficult cases such as: Bad illumination conditions - Non uniform contrast - Under or over exposures Non uniform contrast Bad images resulting from printing or optical defects - Blurred Data Matrix codes - Anisotropic and non uniform scaling - Noisy images - Skewed images Over or under exposures Codes hard to detect - Small sized Matrix Codes - Matrix Codes on a textured background - Laser marked - Nailed - Rectangular Matrix Codes Blurred Data Matrix codes Non uniform scaling Small sized Matrix Codes Print quality verification Matrix Codes on a textured background EasyMatrixCode inspects the quality of the Matrix Code printed. Indicators of the printing quality are defined and graded by the ANSI/AIM standard (International Symbology Specification Data Matrix). EasyMatrixCode is fully compatible with the ANSI/AIM BC standard. API EasyMatrixCode has a new streamlined user interface in order to comply with the most up-to-date C++ practices. Typical performance figures Logical sizes: 9x9, 11x11, 13x13, 15x15, 17x17, 19x19, 21x21, 23x23, 25x25, 27x27, 29x29, 31x31, 33x33, 35x35, 37x37, 39x39, 41x41, 43x43, 45x45, 47x47, 49x49, 10x10, 12x12, 14x14, 16x16, 18x18, 20x20, 22x22, 24x24, 26x26, 32x32, 36x36, 40x40, 44x44, 48x48, 52x52, 64x64, 72x72, 80x80, 88x88, 96x96, 104x104, 120x120, 132x132, 144x144, 8x18, 8x32, 12x26, 12x36, 16x36, 16x48 Minimum quiet zone width: 1 module Minimum module size: 3 pixels Minimum contrast: 20% 19

20 evision TM Ordering Information PRODUCT NAME PRODUCT DESCRIPTION ORDER CODE evision DEVELOPMENT SUITE evision Development Suite 2173 EasyImage, EasyObject, EasyMatch, EasyColor, EasyGauge, EasyFind, EasyOCR, EasyOCV, EasyMatrixCode, EasyBarCode, Dongle for USB port evision RUN-TIMES Bundles Full evision Bundle 2173-rt EasyImage, EasyObject, EasyMatch, EasyColor, EasyGauge, EasyFind, EasyOCR, EasyOCV, EasyMatrixCode, EasyBarCode Inspection Bundle 2171-rt EasyImage, EasyObject, EasyMatch, EasyColor, EasyGauge Mark Inspection Bundle 2181-rt EasyOCR, EasyOCV, EasyBarCode, EasyMatrixCode General-purpose Libraries EasyImage Image processing library 2152-rt EasyColor Color calibration and transformation library 2160-rt EasyObject Blob analysis library 2154-rt EasyMatch Standard pattern matching library 2157-rt EasyFind Geometric template matching library 2166-rt EasyGauge Measurement and dimension control library 2167-rt Mark Inspection Libraries EasyOCR Optical character recognition library 2155-rt EasyOCV Optical character verification library 2162-rt EasyBarCode Bar code reading library 2168-rt EasyMatrixCode Data Matrix 2D code reading library 2163-rt evision LICENSING TOOLS Dongle for USB Port 512 Compact Dongle for Parallel Port 513 America, Euresys Inc. 500 Park Boulevard, suite 525, Itasca, Illinois Toll free: EURESYS - Phone: Fax: Asia, Euresys Pte. Ltd. 627A Aljunied Road, #08-09 BizTech Centre, Singapore Phone: Fax: Japan, Euresys s.a. Japan Representative Office AIOS Hiroo Building 8F, Hiroo , Shibuya-ku, Tokyo Phone: Fax: Europe, Euresys s.a., Corporate Headquarters 14, Avenue du Pré-Aily, B-4031 Angleur, Belgium Phone: Fax: Your distributor info@euresys.com evision, December 2006 DS_eVAll_Dec06