نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار موسسه تحقیقات فنی و مهندسی کشاورزی- سازمان تحقیقات، آموزش و ترویج کشاورزی

2 استاد موسسه تحقیقات ف نی و مهندسی کشاورزی، سازمان تحق یقات، آموزش و ترویج کشاورزی

10.22051/jab.2021.33969.1390

چکیده

سطح برگ نقش مهمی در تجزیه و تحلیل رشد و فتوسنتز دارد. به طور سنتی سطح برگ با استفاده از معادله رگرسیون، روش شمارش شبکه، روش توزین و پلانی‌متری اندازه‌گیری می‌شود. در این مقاله یک الگوریتم ساده، سریع، غیرمخرب و دقیق برای اندازه‌گیری سطح برگ با استفاده از پردازش تصویر پیاده‌سازی شده است. تصویر از دوربین تلفن همراه به دست می‌آید و در فرمت JPEG ذخیره می‌شود. سپس در نرم‌افزار تدوین شده به فرمت Bitmap تبدیل می‌شود. تصویر تبدیل شده رنگی با استفاده از روش آستانه تقسیم‌بندی می‌شود. نویزهای تصویر در منطقه برگ و مقیاس با استفاده از تکنیک انتخاب رنگ منطقه حذف می‌گردد. تعداد پیکسل‌ها در جسم مربع (مقیاس) و منطقه برگ محاسبه و سطح برگ با شمارش تعداد پیکسل‌ها و با توجه به مقیاس، تعیین می‌شود. در این تحقیق، از 6 گیاه مختلف پهن‌برگ، باریک‌برگ، پنجه‌ای و کشیده (انگور، آلو، گردو، انجیر، ذرت و نعناع) برای آزمون نرم‌افزار پیشنهادی استفاده شد. از هر گیاه مساحت 10 برگ مورد اندازه‌گیری قرار گرفت، استفاده از الگوریتم فوق در سطح اطمینان 99٪ با سایر روشهای اندازه‌گیری (پویشگر ثابت، ترسیم بر کاغذ و استفاده از ابزار مساحت‌سنجی مرسوم) تفاوت معنی‌داری نداشت.

کلیدواژه‌ها

عنوان مقاله [English]

Development of software for measuring the surface area of the leaves and comparing with conventional methods

نویسندگان [English]

  • Hooman Sharifnasab 1
  • Fariborz Abbasi 2

1 Assistant Professor of Agricultural Technical and Engineering Research Institute - Agricultural Research, Education and Extension Organization

2 Professor at the Institute of Agricultural Research and Engineering, Agricultural Research, Education and Extension Organization

چکیده [English]

The leaf area plays an important role in growth analysis and photosynthesis. Traditionally, leaf area is measured using the regression equation, network counting method, weighing and planimeter method. In this paper, a simple, fast and accurate algorithm is implemented to measure the leaf area using image processing. The image is obtained from the mobile camera and is stored in JPEG format. Then it is converted into Bitmap format in the software. The converted color image is subdivided using the threshold method. Image noise is removed in the area of the leaf and scale using the region color picker technique. The number of pixels in the square object (scale) and the leaf area is calculated and the leaf area is determined by counting the number of pixels and according to the scale. In this research, six different leafy, leafy, clawed and pulled leaves (grapes, plums, walnuts, figs, corn and peppermint) were used and from each plant, the area of 10 leaves was measured. Using the proposed algorithm at 99% confidence level, there were no significant differences with other measurement methods (constant scanner, drawing on paper and using conventional area measurements).

کلیدواژه‌ها [English]

  • Camera
  • mobile phone
  • non-destructive
  • scanner
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