WinDIAS provides rapid measurement and analysis of leaf area and leaf features - ideal for plant pathology and phenotyping applications.
Rapid thresholding
Three thresholds can be set, each based on a different user-defined range of colours. 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 areas. Thresholds are set by a simple point and click with the mouse in a region of interest. The areas included are immediately visible as overlays on the image.
Editing
Images can be edited on-screen to retouch boundaries, separate objects that overlap, remove undesirable “noise” and holes, add or erase lines or rectangles, and fill bounded areas in any colour.
Measurement
WinDIAS analyses the thresholded regions to measure area, perimeter, length, width, circularity, elongation and shape factor. Calibration is carried out against a ruler.
Object count
Seeds, needles, or other small objects can be quickly counted by WinDIAS. Colour 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.
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Entry Level System
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Standard System
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Rapid System
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Throughput (leaves/hour)
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~50 (typical, depends on leaf size)
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~150
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~800
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Resolution
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Typically >1000 dpi
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2056 x 1542 pixels
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2056 x 1542 pixels
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Minimum object size
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~0.02 mm
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1 pixel
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1 pixel
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Maximum sample area
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297 x 210 mm (A4)
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300 x 295 mm
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250 x 290 mm (conveyor)
250 x >1000 mm (long leaf mode)
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Accuracy
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area measurement
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± 1% typical
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± 4% typical
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± 4% typical
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diseased/healthy area
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contrast dependent
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contrast dependent
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contrast dependent
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long leaf mode
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not applicable
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not applicable
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± 5% typical
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Calibration
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static measurements
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against object of known length,
e.g. a ruler
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against object of known length,
e.g. a ruler
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against a ruler
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conveyor measurements
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not applicable
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not applicable
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against a target of known area
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Conveyor belt speeds
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not applicable
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not applicable
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60/100/140/190 mm/s (20?ster for 60 Hz model)
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Colour depth
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WinDIAS works in 24 bit colour space (16 million colours)
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Image file formats
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.jpg, .bmp and .tif (WInDIAS is compatible with many scanners and cameras that are TWAIN compliant)
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Operating system & drivers
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Windows 7,8 and 10 (32 and 64 bit)
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