公开(公告)号：US11885683B2

公开(公告)日：2024-01-30

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 ,  G06T7/90 ,  G01J3/02 ,  G01J3/10 ,  G01N21/84

CPC classification number: G01J3/42 ,  G01J3/0272 ,  G01J3/10 ,  G01N21/84 ,  G06T7/90 ,  G01N2021/8466 ,  G06T2207/30188

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.

公开(公告)号：US11968936B2

公开(公告)日：2024-04-30

申请号：US17442243

申请日：2020-06-08

Applicant: YARA INTERNATIONAL ASA

Inventor： Idaly Ali ,  Robin Yeo ,  Muhammad Izuddin ,  Navin Twarakavi

IPC: G06F3/048 ,  A01G7/00 ,  G01J3/52 ,  G01N21/84

CPC classification number: A01G7/00 ,  G01J3/52 ,  G01N2021/8466

Abstract: A method of determining health of a plant which method includes displaying, on a screen of an electronic display of a mobile computing device, a digital leaf colour chart with colours ranging from yellow green to dark green; displaying on the screen next to the digital leaf colour chart a white area on which a leaf of the plant is to be placed; receiving input to the mobile computing device from a user about which colour of the digital leaf colour chart that best matches the leaf placed on the white area; and the mobile computing device determining the plant health based on the received input.

公开(公告)号：US11500126B2

公开(公告)日：2022-11-15

申请号：US17298092

申请日：2020-01-31

Applicant: YARA INTERNATIONAL ASA

Inventor： Syed Mehtab ,  Taewon Yeon ,  Alexander Toporov ,  Navin Twarakavi ,  Ruan Boezaart

IPC: G01W1/10 ,  G01W1/00

Abstract: A method for downscaling a weather forecast including obtaining a sky image and location data indicative of a user location via a mobile computing device; sending the location data to a weather forecast provider; generating, by the weather forecast provider, a local weather forecast for the user location; sending the local weather forecast to a server; determining, by the mobile computing device, cloud cover data and cloud type data based on the sky image, and sending the cloud cover data and cloud type data to the server or sending the sky image to the server and determining cloud cover data and cloud type data based on the sky image; increasing the resolution of the local weather forecast based on the cloud cover data and the cloud type data, thus obtaining a downscaled local weather forecast; and, sending the downscaled local weather forecast to the mobile computing device.