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WinDIAS 3 -- Image Analysis System for Leaves

Category: PLANT SCIENCE

Model: Image Analysis System

Avaibility: AVAILABLE

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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.

 

 

Entry Level System

Standard System

Rapid System

Throughput (leaves/hour)

~50 (typical, depends on leaf size)

~150

~800

Resolution

Typically >1000 dpi

2056 x 1542 pixels

2056 x 1542 pixels

Minimum object size

~0.02 mm

1 pixel

1 pixel

Maximum sample area

297 x 210 mm (A4)

300 x 295 mm

250 x 290 mm (conveyor)

250 x >1000 mm (long leaf mode)

 

Accuracy

area measurement

± 1% typical

± 4% typical

± 4% typical

diseased/healthy area

contrast dependent

contrast dependent

contrast dependent

long leaf mode

not applicable

not applicable

± 5% typical

 

Calibration

static measurements

against object of known length,

e.g. a ruler

against object of known length,

e.g. a ruler

against a ruler

conveyor measurements

not applicable

not applicable

against a target of known area

 

Conveyor belt speeds

not applicable

not applicable

60/100/140/190 mm/s (20?ster for 60 Hz model)

 

Colour depth

WinDIAS works in 24 bit colour space (16 million colours)

Image file formats

.jpg, .bmp and .tif (WInDIAS is compatible with many scanners and cameras that are TWAIN compliant)

Operating system & drivers

Windows 7,8 and 10 (32 and 64 bit)

 

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