EasyColor

Color image analysis library

At a glance
  • Fast conversion of images between 11 color spaces
  • Color segmentation: to identify objects based on their color
  • Color verification: to verify the color of objects



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New in Open eVision 24.02
New in Open eVision 24.02

EasyFind : Significant speed increase, without any loss of accuracy.

EasyImage

  • New Gabor filtering function to help with texture analysis and edge detection.
  • New inverse circle warp function, providing conversion between polar and cartesian coordinates.
Easy: Improved off-screen rendering on all platforms.
Admin: Simplified version upgrade procedure with version numbers removed from filenames.


New in Open eVision 23.12
New in Open eVision 23.12

Import of standard datasets into Deep Learning Studio


EasySpotDetector (Beta release, contact us for more information)
  • A single API and license for the alignment of region of interest, surface defect detection (particles, scratches, …) and classification with a custom trained Deep Learning classifier.
  • Realtime processing for inline surface inspection


Neo Licensing System
Neo Licensing System

  • Neo is the new Licensing System of Euresys. It is reliable, state-of-the-art, and is now available to store Open eVision and eGrabber licenses.
  • Neo allows you to choose where to activate your licenses, either on a Neo Dongle or in a Neo Software Container. You buy a license, you decide later.
  • Neo Dongles offer a sturdy hardware and provide the flexibility to be transferred from a computer to another.
  • Neo Software Containers do not need any dedicated hardware, and instead are linked to the computer on which they have been activated.
  • Neo ships with its own, dedicated, Neo License Manager, which comes in two flavours: an intuitive, easy to use, Graphical User Interface and a Command Line Interface that allows for easy automation of Neo licensing procedures.


Open eVision Studio: Evaluation, prototyping and development tool
Open eVision Studio: Evaluation, prototyping and development tool

Open eVision Studio is the evaluation, prototyping and development tool of Open eVision. Its intuitive graphical user interface allows you to call and immediately see the result of any of eVision's 2D image processing functions. A scripting functionality generates the corresponding code, which can then be copied and pasted into your application.

Open eVision Studio is free (when using Open eVision 2.0 and above) and does not require any license.

Just click on DOWNLOAD OPEN EVISION STUDIO and install Open eVision. Sample images, manuals and sample programs are included.


Operation Principles
Operation Principles

  • Although the RGB (red, green, blue) representation of color images is well suited for color reproduction (it is used by monitors and cameras), many other representations have been designed for various purposes. More particularly, the ""Intensity/Saturation/Hue"" color systems are well suited for machine vision applications. EasyColor supports several of them. They separate the achromatic (black and white) component (Intensity) from the chromatic components (Saturation and Hue) which are used to describe colors. This allows a more intuitive interpretation of colors and is very useful to segment colors while eliminating lighting effects. It is thus required, when doing color image processing, to convert the RGB images coming from the camera to another color space, such as LSH, ISH or YSH. EasyColor provides a set of optimized color space conversion functions.
  • Also included in EasyColor are traditional color image processing functions (such as Bayer pattern conversion and color balance correction), as well as powerful color analysis functions, which allow the user to detect and classify color objects and defects. For example, color image segmentation allows you to decompose a color image in different regions by assigning a class to every pixel. Color image segmentation can be used in conjunction with EasyObject to perform blob analysis on the segmented regions. It is also possible to filter pixels by selecting ranges of values for each component, for example, selecting ""olive green"" pixels based on their hue only, with a loose discrimination on the intensity and saturation to eliminate surface and lighting effects.


All Open eVision libraries are available for Windows and Linux
All Open eVision libraries are available for Windows and Linux

  • Microsoft Windows 11, 10, 8.1, 7 for x86-64 (64-bit) processor architecture
  • Linux for x86-64 (64-bit) and ARMv8-A (64-bit) processor architectures with a glibc version greater or equal to 2.18


EasyColor Description
EasyColor Description

EasyColor includes a set of optimized color systems transformation functions and color analysis functions. The color systems supported 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 color images into gray level images and vice versa.


EasyColor functions
EasyColor functions

  • Color transformations: Lookup Tables (LUTs) for colorimetric systems conversion, gain / offset (color), color calibration or color balance (gamma pre-compensation, white balance)
  • Merging and extraction of the color image components
  • Pseudo-coloring
  • Color classification for segmentation
  • Handling of special color formats: YUV 422 decompression and Bayer pattern to RGB


Software
Host PC Operating System
  • Open eVision is a set of 64-bit libraries that require an Intel compatible processor with the SSE4 instruction set or an ARMv8-A compatible processor.
  • Open eVision can be used on the following operating systems:
    • Microsoft Windows 11, 10, 8.1, 7 for x86-64 (64-bit) processor architecture
    • Linux for x86-64 (64-bit) and ARMv8-A (64-bit) processor architectures with a glibc version greater or equal to 2.18
  • Remote connections
    • Remote connections are allowed using remote desktop, TeamViewer or any other similar software.
  • Virtual machines
    • Virtual machines are supported. Microsoft Hyper-V, Oracle VirtualBox and libvirt hypervisors have been successfully tested.
    • Only the Neo Licensing System is compatible with virtualization.
  • Minimum requirements:
    • 2 GB RAM to run an Open eVision application
    • 8 GB RAM to compile an Open eVision application
    • Between 100 MB and 2 GB free hard disk space for libraries, depending on selected options.
APIs
  • Supported Integrated Development Environments and Programming Languages:
    • Microsoft Visual Studio 2017 (C++, C#, VB .NET, C++/CLI)
    • Microsoft Visual Studio 2019 (C++, C#, VB .NET, C++/CLI)
    • Microsoft Visual Studio 2022 (C++, C#, VB .NET, C++/CLI)
    • QtCreator 4.15 with Qt 5.12
Ordering Information
Product code - Description
Optional accessories
Color Inspection

Color inspection

Associated Products
EasyColor
False Color

False color rendering

Associated Products
EasyColor
Color Inspection Pharma

Color inspection in the pharmaceutical industry

Associated Products
EasyColor
Color Printing

Label and packaging inspection: Verification of the printing color

Associated Products
EasyColor