**3.4 GLOBAL LAB image**

It is an easy to use graphical software application for creating scientific and general purpose imaging application. Use the Point & Click script to develop applications quickly. Simply configure the tools you want to use and add them to your script to create powerful imaging applications without writing any code.

### **3.5 Matlab mage processing toolbox**

Image Processing Toolbox™ provides a comprehensive set of reference-standard algorithms and graphical tools for image processing, analysis, visualization, and algorithm development. You can perform image enhancement, image deblurring, feature detection, noise reduction, image segmentation, spatial transformations, and image registration. Many functions in the toolbox are multithreaded to take advantage of multicore and multiprocessor computers.

#### **3.6 ImageJ**

ImageJ is a public domain Java image processing program inspired by NIH Image. It runs, either as an online applet or as a downloadable application, on any computer with a Java 1.4 or later virtual machine. Downloadable distributions are available for Windows, Mac OS, Mac OS X and Linux.

#### **3.7 Myriad**

Myriad image processing software was also used for comparing images and measuring surface area of images. This program has two steps for measuring images. First step was

Machine Vision Measurement Technology and Agricultural Applications 139

Fig. 3. Apple lenght measurement by using Myriad Image Analysis Software.

referred to as interest point operators, or alternatively interest region operators.

Fig. 4. Counting the number of droplets by using ImageJ Software.

In the area of machine vision, blob detection refers to visual modules that are aimed at detecting points and/or regions in the image that are either brighter or darker than the surrounding (Fig. 4.). There are two main classes of blob detectors (i) differential methods based on derivative expressions and (ii) methods based on local extrema in the intensity landscape. With the more recent terminology used in the field, these operators can also be

**4.1.3 Determining number** 

calibration of the program. For this purpose software needed a calibration ruler or a calibration plate. Second step was true selection of images.

### **4. Measurement types**

#### **4.1 Global measurement types**

#### **4.1.1 Surface area measurement**

Surface areas describe as the boundries between structures. Surface area measurement of the different part of plant such as leaf projection area and fruit projection area is important for process engineering of agricultural products. So scientist use different methods for measuring areas of plant parts and one of them is image processing and analysis techniques. We need to slice products in to the pieces (Sum of these piece area give us the total surface of the agricultural product.) or select the boundries of the agricultural products for surface area measurements (Fig. 2.). They use the surface area measurements for estimating product diameter, weight, fruit volume and pesticide usage estimation.

Fig. 2. Apple area measurement (Selection method) by using Myriad Image Analysis Software.

#### **4.1.2 Length measurement**

Length measurement is usually applied in objects that have one more long dimension in comprision of others. For small objects such as seeds, lenght measurement can be done by using mage analysis and processing techniques. Photographic enlargement of the dimensions help us to measure lenght of agricultural products easly (Fig. 3.).

Fig. 3. Apple lenght measurement by using Myriad Image Analysis Software.
