Assess 2.0: Image Analysis Software for Plant Disease Quantification

Lakhdar Lamari 
APS Press  2008  

Personal Use Version  CD & Manual  ISBN 9780890543696 S      £225.00

Multiple User Version  CD & Manual  ISBN 9780890543696 M      £375.00
Note The use of the CD-Roms is covered by the APS License Agreement

Assess 2.0 quantifies and measures plant diseases quickly and accurately at a fraction of the cost of general image analysis software.

What's NEW in Assess 2.0?

  • Automatic measurement of many plant disease lesions - No matter who measures the disease lesions, the result will always be the same.
  • Automatic measurement of ground cover - Agronomists and those interested in measuring ground cover can do so with a single click of the mouse.
  • Automatic recognition and percent-disease measurement of individual leaves on the same image - This new feature is a real time-saver. You can scan many leaves on the same screen and obtain a disease measurement for each leaf with one click of the mouse.
  • Simple calibration - Images scanned in Assess 2.0 no longer require calibration. Additionally, if the resolution of an image is known (dpi), the user simply enters the values into Assess 2.0. Physical units of measure can now be converted in Assess 2.0. You can calibrate an image in inches and later select one of 10 units without any calibration.
  • Support for all standard and many non-standard file formats for reading and writing Assess 2.0 can handle over 60 file formats, including several RAW formats for digital cameras. No need to convert images using other software.
  • Scanner interface

Quickly and easily quantify disease symptoms on plants with Assess 2.0: Image Analysis Software for Plant Disease Quantification. Rapid measurement of leaf area, percent disease, root length, lesion count, percent ground cover, and applications are made simple with this versatile and affordable software. Assess 2.0 introduces automatic measurement (user-independent) of many plant diseases and ground cover, to make disease quantification fast, easy, reliable, and reproducible. Assess 2.0 can also be used as an interactive laboratory tool for real-time length and area measurements of anything that can be imaged (scanned, digital photographs, microscopy, etc.).

The intuitive Windows-based interface makes image analysis and plant disease quantification simple. Assess 2.0 is hardware-independent, requiring only a computer with a 32-bit computer operating system. The program supports Twain-compliant imaging devices such as scanners, frame grabbers, or digital cameras for image acquisition, although images can be imported from any computer drive, CD, network or other applications. Assess 2.0 supports all standard graphic file formats and most non-standard formats.

Accompanied by a textbook-quality user manual with nineteen easy-to-follow tutorials, Assess 2.0 makes learning and training fascinating and fun. Automated installation is hassle-free, allowing users to start working on plant disease quantification immediately. Optimized for use in plant pathology and agronomy, this revolutionary tool produces invaluable results for plant pathologists, agronomists, plant breeders, horticultural scientists and anyone needing to analyze, quantify and measure plants and plant diseases.

What is ENHANCED in Assess 2.0?

  • Easy and intuitive user interface
  • Rapid measurement of area, percent disease, percent ground cover, lesion count and root length
  • Real-time user interactive tool for area, length, and angle measurement
  • Assess 2.0 can be used as a real-time digital tool for the measurement of area and lengths. This is a very fast way to measure areas of traced objects, lengths of straight lines, or arbitrarily-shaped curves (such as hyphae and roots).
  • Image acquisition from any Twain-compliant device including scanners, digital cameras, and frame grabbers
  • Simple macro utility and language to automate tasks and perform batch processing

Requires: 32-bit Windows Operating System (95, 98, Me, NT, 2000, XP, or Vista).
Licensing Information for Assess 2.0 Image Analysis Software for Plant Disease Quantification


Use of the Program is limited solely to the individual purchaser. It may not be loaned, rented, or otherwise shared with other individuals. The CD-ROM and its content may not reside concurrently on more than one computer and it may not be networked.

MULTI USER VERSION LICENSE: The Multi-User Version of the Program may not be networked. It is available for use by an unlimited number of individuals. The Program may be shelved at a single facility to be borrowed by individuals for use in that facility or taken elsewhere for use, or to be hosted on a single shared terminal. Multiple-User Versions are marked with a stamp on the face of the disc and/or a label on the software manual.


This Program is a Personal User Version unless you purchased the Multi-User Version License. The specific version you purchased is designated on your invoice or packing slip. If you no longer have your invoice or packing slip and need to identify which license version you purchased, please contact The American Phytopathological Society, 3340 Pilot Knob Road, St Paul, MN 55121 USA. Telephone +1.651.454.7250 ; aps@scisoc.org; www.apsnet.org


APS warrants that this CD is free from defects in materials and workmanship under normal use. APS will replace defective CDs free of charge upon their return to APS. APS makes no warrant that the Program is free from bugs, errors, or omissions.

These warranties are in lieu of any other warranties, expressed or implied. In no event will APS be liable for damages, including financial or otherwise, or other incidental or consequential damages arising out of your use of or inability to use the Program. In no event will APS's liability exceed the amount paid by the Customer for the Program. This will be APS's entire liability with respect to this License. Some states/jurisdictions do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, therefore, the above limitations or exclusions may not apply to you.


APS will make a reasonable effort to answer technical questions concerning the Program through a website designed for this purpose (the web address is designated in the help menu of the program). APS supports the Program only if it is used under the conditions and on operating systems for which the Program is designed. Any technical assistance that APS may provide the Customer is provided solely as a service to the Customer for which APS assumes no liability.


If a term or condition of this Agreement is invalid or unenforceable, the remaining terms and conditions shall remain in full force and effect and shall be enforceable to the maximum extent permitted by law.

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American Phytopathological Society : CD-ROMs : analytical methods : crop protection : plant pathology : plant science : software

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