Design of Leaf Detection Application using Deep Learning Convolutional Neural Network (CNN) Case Study Lambosir (Blok Leuweung Buah) Mountain Ciremai National Park Iwan Lesmana*, Toni Khalimi, Rachmat Ismaya, Hegar Paningkat Bagja Universitas Kuningan, Kuningan, Indonesia {iwanlesmana@uniku.ac.id} Abstract. The Leuweung Buah Lambosir area of Mount Ciremai National Park is included in the rehabilitation zone, the plant diversity index in Lambosir is in the medium category. Increased knowledge and skills regarding the introduction of plant species for officers in Mount Ciremai National Park is often carried out, but for some officers there are some difficulties in identifying plants quickly and accurately. Deep learning is a branch of machine learning (ML) that uses deep neural networks to solve problems in the ML domain. This study aims to create a leaf detection application using a deep learning Convolutional Neural Network (CNN) approach. The types of leaves used in this study were 6 types of leaves including Sonokeling (Dalbergia latifolia Roxb.), Kuray (Trema orientalis), Bungur (Lagerstroemia sp) , Kibeusi (Rhodamnia cinerea), Guava Rivet (Syzygium densiflorum), and Huni (Antidesma Bunius). Tests were carried out with a total of 600 images: 400 images as training data and 200 images as testing data. Testing of each object produces an accuracy rate above 80%. Keywords: Leaf Detection; Deep Learning; CNN 1 Introduction Mountain Ciremai National Park (TNGC) is geographically located at the coordinates of 108020' East Longitude – 108040 East Longitude and 6040 South Latitude – 6058 South Latitude. The topography of Mount Ciremai varies from sloping to steep. The slope of the land which includes sloping land (00 – 80) is only 26.52% and above 80 is 73.48%. The total area of TNGC ± 15,500 Ha is divided into two areas of 6,800.13 Ha in Majalengka Regency and 8,699.87 Ha in Kuningan Regency. Administratively, the TNGC region covers 2 regencies, namely the west including Majalengka Regency, and the east including Kuningan Regency with 7 sub-districts consisting of 25 villages in Kuningan Regency and 20 villages in 7 sub-districts in Majalengka Regency [1]. The Leuweung Buah Lambosir area of Mount Ciremai National Park is included in the rehabilitation zone, the plant diversity index in Lambosir is in the medium category. The flora in Mount Ciremai National Park is very diverse, there are thousands of species of trees and plants in the area. To find out the types of plants there is a classic way, namely by looking at the basic organs, namely roots, stems, skin, fruits and leaves, but there are still many people who have not been able to distinguish the types of plants from the classical method. This is because there are several types of trees and plants that have the same UNISET 2021, December 02, Kuningan, Indonesia Copyright © 2022 EAI DOI 10.4108/eai.2-12-2021.2320309