公开(公告)号：US20220155146A1

公开(公告)日：2022-05-19

申请号：US17442232

申请日：2020-05-28

Applicant: YARA INTERNATIONAL ASA

Inventor： Idaly ALI ,  Matthew LIM ,  Robin YEO ,  Zhide LOH ,  Muhammad IZUDDIN ,  Navin TWARAKAVI

IPC: G01J3/42 ,  G01N21/84 ,  G01J3/02 ,  G01J3/10 ,  G06T7/90

Abstract: A method of estimating chlorophyll content of a leaf including providing a device wherein the device includes a mobile computing device with a digital camera; and a peripheral removably attached to the mobile computing device, the peripheral including a light source aligned with the digital camera, wherein the peripheral provides for a space between the light source and the digital camera; capturing by the digital camera a first image of the light source turned on without the leaf interposed between the digital camera and the light source; retrieving exposure data of the first image; capturing by the digital camera a second image with the leaf interposed between the digital camera and the turned on light source; retrieving exposure data of the second image; and using a processor, estimating the chlorophyll content of the leaf based on the retrieved exposure data of the first and second images.