International Webinar 2022 - Transformation of Export Flows in the Context of Global Food Crisis - Part 24

Digital image processing can be used in agricultural production. Crop Management: irrigation and weed detection are used for crop assessment using remote sensing. Identification of nutrient and plant content deficiencies: Nutrient deficiencies and various plant constituents have been identified in the leaves and skin of the product using image processing algorithms. Crop and field estimation : Geographic information system (GIS), color and texture segmentation algorithms are used.


One of the digital image identification techniques for agricultural surveillance is the Normalized Difference Vegetation Index (NDVI). NDVI, or Normalized Difference Vegetation Index, is a tool used to monitor plant health and growth. It is a measure of surface greenery and provides an automated way to monitor plant development and health throughout the growing season. The advantage of using NDVI, can be measured from space or by drone, without the need for on-site equipment. The use of NDVI as a crop monitoring tool has proven to be an effective tool for many applications. Several models have been developed to use NDVI to predict plant biomass and yield, manage nitrogen fertilization, manage irrigation and other uses.


NDVI is obtained by measuring the difference between reflected near-infrared light and visible reflected red light and calculating it against the total amount of radiation emitted from the Earth's surface: NDVI =(NIR-RED)ANIR + RED). Green plants absorb light energy from their surroundings and use it to synthesize sugars and other organic compounds. As a result, they reflect more near infrared light and absorb visible red light. In general, higher values indicate more healthy vegetation or plants, while lower values indicate less healthy plants or plants that are not growing properly. NDVI values between 0 and 1 are usually considered optimal for plant growth; a value less than O indicates an area with too little vegetation for photosynthesis to occur effectively (such as during a drought). Negative NDVI corresponds to water.


Normalized Different Vegetation Index (NDVI) can be used to measure the health level of vegetation. This can be done because in the process of photosynthesis, healthy vegetation will absorb more of the visible light spectrum (red & blue) and will reflect the infrared spectrum. Optical satellites can record the spectrum of light from visible to invisible and then recorded in something called a "band". The infrared red band will be used to calculate the NDVI value. The NDVI value is in the range -1 to 1, where non-vegetation areas (open areas, water bodies, settlements) have a lower value than vegetation areas and their values can vary. NDVI is commonly used to monitor vegetation health. In addition, NDVI can also be used in land cover analysis because of its ability to distinguish between vegetated and non-vegetated areas.


The presenter who delivered the material was Mr. Adi Nugroho who is a graphic design lecturer at STEKOM University, Indonesia. The title of the presentation presented by Mr. Adi was "Digital Imaging Role in Information Technology Against Food Crysis". This material was presented at an international webinar organized by the University of Science & Computer Technology (STEKOM University) in collaboration with the Karachi Institute of Economics & Technology (Pakistan), Universiti Malaysia Perlis (Malaysia), STIE STEKOM, Association of Industrial and Vocational Communities (PERKIVI), Indonesian Smart Teacherpreneur Association (PTIC) and TopLoker.com. The webinar will be held on December 8, 2022 online using zoom media. All scheduled international presenters managed to attend and fill in the material properly.


The webinar activity is part of the implementation of STEKOM University's commitment to increase various international activities in order to realize the vision to become an international-class university. Various international activities carried out by STEKOM University continue from year to year. There are international activities that are sustainable and there are also some international activities that are not sustainable. All types of international activities are accommodated and regulated by the International department of STEKOM University.