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US 12,136,212 B2Granted
Measurement of phytotoxicity from imagery
AssigneePrecision Silver LLC
InventorTaylor Courtland Glenn
Life of this patent
Estimating the term…
Abstract
An assessment system receives color images of plants and produces rating values of chlorosis, necrosis, bleaching, stunting, deformations, and/or an overall general assessment of the plants. Phytotoxicity damage can be identified via the color images using pixelwise classifications from imagery of crop canopy into healthy, chlorotic, necrotic, and bleached classes.
Claims18
A method for phytotoxicity assessment, comprising:
- receiving a selection of a region of interest in an overhead image view of plants;
- performing a crop canopy segmentation by labeling each pixel of an image within the region of interest as either being part of a crop canopy or not part of the crop canopy;
- performing a pixelwise classification of the pixels labeled as being part of the crop canopy to identify which pixels belong to which of a plurality of phytotoxicity health classes comprising healthy, chlorosis, bleaching, and necrosis;
- measuring height of plants in the region of interest from a digital elevation map associated with the overhead image view of the plants;
- computing a stunting phytotoxicity assessment by comparing the measured heights or an associated volume to a height or volume value in a reference area;
- computing raw ratings of chlorosis, necrosis, and bleaching for the region of interest;
- computing raw values of deformation;
- computing raw values of a general phytotoxicity assessment;
- computing final ratings of chlorosis, necrosis, bleaching, deformation, and general phytotoxicity assessment by comparing the raw ratings of chlorosis, necrosis, and bleaching, the raw values of deformation, and the raw values of general phytotoxicity on each region of interest to corresponding computed ratings of the reference area;
- computing an overall phytotoxicity metric for each region of interest by a combination of two or more of the final ratings for chlorosis, necrosis, bleaching, deformation, and general phytotoxicity;
- and
- transmitting one or more resulting measurements of final ratings of chlorosis, necrosis, bleaching, deformation, general phytotoxicity assessment, and the overall phytotoxicity metric to an interactive viewer application according to a received request.
9 more elements
A computer readable storage medium having instructions stored thereon that when executed by a computing system direct the computing system to:
- receive a selection of a region of interest in an overhead image view of plants in a color image;
- perform a crop canopy segmentation by labeling each pixel of the color image within the region of interest as either being part of a crop canopy or not part of the crop canopy;
- perform a pixelwise classification of the pixels labeled as being part of the crop canopy to identify which pixels belong to which of a plurality of phytotoxicity health classes comprising healthy, chlorosis, bleaching, and necrosis;
- assign colors to the identified pixels belonging to the plurality of phytotoxicity health classes;
- provide for display the overhead image view of plants with the identified pixels having the assigned colors;
- calculate a raw chlorosis rating as a proportion of a total number of vegetation pixels labeled as part of the crop canopy in the region of interest that are classified as chlorotic;
- calculate a raw necrosis rating as a proportion of the total number of vegetation pixels labeled as part of the crop canopy in the region of interest that are classified as necrotic;
- calculate a raw bleaching rating as a proportion of the total number of vegetation pixels labeled as part of the crop canopy in the region of interest that are classified as bleached;
- calculate a reference raw chlorosis rating as a proportion of a total number of vegetation pixels labeled as part of the crop canopy in a reference region that are classified as chlorotic;
- calculate a reference raw necrosis rating as a proportion of the total number of vegetation pixels labeled as part of the crop canopy in the reference region that are classified as necrotic;
- calculate a reference raw bleaching rating as a proportion of the total number of vegetation pixels labeled as part of the crop canopy in the reference region that are classified as bleached;
- compute final ratings of chlorosis, necrosis, and bleaching by comparing the raw ratings of chlorosis, necrosis, and bleaching on each region of interest to the reference raw ratings of chlorosis, necrosis, and bleaching of the reference region;
- and
- provide the final ratings for display according to a received request.
11 more elements
A computer readable storage medium having instructions stored thereon that when executed by a computing system direct the computing system to:
- receive a selection of a region of interest in an overhead image view of plants in a color image;
- perform a crop canopy segmentation by labeling each pixel of the color image within the region of interest as either being part of a crop canopy or not part of the crop canopy;
- perform a pixelwise classification of the pixels labeled as being part of the crop canopy to identify which pixels belong to which of a plurality of phytotoxicity health classes comprising healthy, chlorosis, bleaching, and necrosis;
- measure height of plants in the region of interest from a digital elevation map associated with the overhead image view of the plants;
- calculate a stunting phytotoxicity assessment by comparing the measured heights or an associated volume to a height or volume value in a reference area;
- assign colors to the identified pixels belonging to the plurality of phytotoxicity health classes;
- and
- provide for display the overhead image view of plants with the identified pixels having the assigned colors.
5 more elements
Dependencies are inferred from the claim text.