Image Processing Libraries
Sapera Essential is at the heart of Sapera Vision Software delivering a suite of image processing and analysis functions. These functions include over 400 image processing primitives, barcode tool, pattern matching tools both area-based and edge-based, OCR, color, blob analysis, measurement and calibration tools for perspective and lens correction.
Key Features
-Hardware independent, image acquisition, processing and analysis library
-Supports Line scan and Area, color and monochrome cameras
-Power tools for image recognition, object identification, measurement and machine guidance
-Designed for machine vision OEMs, System Integrators and End users
-Modular components support 32 and 64-bit platforms
Key Benefits
-Extensive camera support
-Industrial strength algorithms ensure accuracy and reliability
-Cost effective solution for inspection, identification, guidance and measurement applications
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Image Acquisition
Sapera Essential delivers a full suite of software libraries for image acquisition, display and control and includes an extensive list of image processing functions. The Sapera Essential feature set includes program portability, versatile camera controls, functions for display management and easy-to-use application development wizards. Machine vision applications using Sapera Essential can be developed with conventional unmanaged C++ or managed C++, C# and Visual Basic® on Microsoft Windows® 7, Windows® XP, Windows® Vista Business Edition (32/64-bit) platforms. These applications can be developed using either Microsoft Visual Studio .NET or Borland C++ Builder.
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Search (pattern matching)
Area-based
-Algorithm based on normalized cross-correlation (NCC)
-Extremely fast when no scaling is involved
-Tolerant to extreme noise
-Position accuracy to 1/25 pixel
-Edge-based
-Algorithm based on object contours
-Rotation and contrast independent
-Position accuracy to 1/50th pixel
-Angle accuracy to 1/80th degree
-Locates up to 5 instances of target in image
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Image Processing
Sapera Essential includes a powerful frame grabber configuration and camera set-up utility plus a suite of image processing tools including a series of highly optimized basic image processing functions, Blob Analysis and Calibration tools.
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Measurement Tool
Key Features:
-Highly optimized execution
-Automatic simultaneous multiple measurements
-Sub-pixel Accuracy
-Measurement statistics for distances and angles.
-Built-in calibration tools ensure accurate real-world measurements
-Extensive set of markers include single or multiple points, lines, arcs and
circles
Sapera Essential's Measurement Tool is a video metrology tool for machine vision inspection applications involving measurement for positioning, identification and guidance. The measurement tool includes an extensive suite of highly optimized functions to facilitate real-world measurements. In addition, the measurement tool features a wide selection of Image Markers using which measurements can be performed. The marker type includes point, line, polyline, arc, circle, spoke, and many more to facilitate multiple simultaneous measurements from one or more selected paths. The highly accurate results are computed to with sub-pixel accuracy. The measurement tool can be combined with Sapera Essential's calibration tool to obtain consistent and accurate real-world measurements.
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Optical Character Recognition (OCR):
A highly integrated optical character recognition tool that is scale and contrast invariant, the OCR tool supports both solid and dot matrix fonts and can be trained on user fonts. Its robust recognition technique is optimized for speed and accuracy. The ability of the OCR tool to operate on significantly degraded images makes it ideal for repetitive inspection tasks performed in the pharmaceutical, electronics and semiconductor industries.
-User trainable font set
-Supports solid and dot-matrix fonts including italic fonts
-Tolerates non-linear background variations
-Supports training of touching characters
-Two algorithms: binary-based (speed), greyscale-based (tolerant to extreme noise).
-Resolution level adjustment (robustness versus speed)
-Rotation, scale and aspect ratio invariance.
-Multi-string support (reads more than one string of characters in single execution).
-Support of Asian characters (output in Unicode mode).
-Adjustable effort level
-Alphabetical font sorting
-Automatic string detection
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Barcode/Decoding
-Supports 1-D and 2-D industry standards
-High tolerance for noisy, poorly illuminated images
-Significantly faster than laser-based scanning
-Can be used in tandem with other Sapera tools (e.g. Search)
-Sub-pixel accuracy
-Asian native language and Unicode output
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Color Tool
Sapera Essential features an advanced color tool for machine vision that delivers speed, accuracy and flexibility to imaging applications that require color inspection. Ideal for sorting, verification and inspection in food, packaging, print, textile and electronics inspection, this powerful tool supports multiple color spaces such as HSI, CIELAB, RGB, and YUV and can perform color classification in native color space. With it's built in support for color calibration, user trainable color classifier, Delat-E measurement and lookup table operations, the Sapera Essential Color tool augments the performance of Sapera Essential image processing and analysis libraries
-Classes for color processing and analysis
-RGB, YUV, HSV, LAB
-Calibration, correction, identification, classification
-Pattern matching
-Color space conversions