Leaf Canopy and Image Analysis

The recently upgraded WinDIAS 3 Leaf Image Analysis System provides fast, accurate measurement of leaf area and leaf features – making it ideal for plant pathology and phenotyping applications. WinDIAS’s analysis features are well suited to applications where precise color discrimination is critical.

The WinDIAS 3 leaf area measurement system builds on that expertise, making use of high-resolution camera and scanner technology to provide researchers with an analysis tool that is powerful and yet easy to use.

The WinDIAS system is available in three versions – Entry Level System (with A4 scanner), Standard System (with video camera), and Rapid System (which adds a conveyor belt unit, and can process up to 800 leaves an hour).

For reporting and further analysis, all results and images from WinDIAS are easily exchanged with other Windows applications.

Rapid thresholding: Three thresholds can be set, each based on a different user-defined range of colors. The primary threshold is used for the main zones of interest in the image, e.g. healthy areas. The secondary and tertiary thresholds are used for other zones, e.g. diseased or variegated areas. Thresholds are set by a simple point and click with the mouse in a region of interest. The areas selected are immediately visible as overlays on the image.

Measurement and editing: WinDIAS analyses the thresholded regions to measure area, perimeter, length, width, circularity, elongation and shape factor. Calibration is carried out against a ruler. Images can be edited on-screen, enabling the user to retouch boundaries, separate objects that overlap, remove undesirable “noise” and holes, add or erase lines or rectangles, and fill bounded areas in any color.

Object count: Seeds, needles, or other small objects can be quickly counted by WinDIAS (even when touching). Color thresholding enables easy discrimination of different types of object, or disease spots. Dust and debris can be excluded by defining a minimum object area.

Exchange of data and images: WinDIAS imports images in bmp, jpg and tif formats, and results can be saved as txt files for easy import into Excel. For reporting and further analysis, all results and images from WinDIAS are easily exchanged with other Windows applications.

Fast batch processing of image files: WinDIAS can automatically analyze large numbers of leaf images by operating as a virtual conveyor. This feature saves a great deal of time when processing images acquired in the field or when sent in for processing from a remote research lab. Images in bmp, jpg, or tif format are all suitable for processing.

Batch processing mode is simple to use – just select the folder holding the target images. WinDIAS will then automatically load each image in turn, measure it, and save the results back into the same folder.

Upgrading Older Systems

Software Upgrades
Customers using older version of WinDIAS software can upgrade to the new version FREE OF CHARGE (requires USB Copy Protection Dongle that came with the original software) Software download page.

Hardware Upgrades
Older WinDIAS systems may include components, such as the camera stand and conveyor, that are compatible with the new lighting and camera accessories. Please contact Dynamax for guidance before ordering hardware upgrades.