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1. 发明申请

US20200218930A1 CLOUD DETECTION ON REMOTE SENSING IMAGERY 审中-公开
公开(公告)号：US20200218930A1
公开(公告)日：2020-07-09
申请号：US16818428
申请日：2020-03-13
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06K9/62 , G06K9/40 , G06T7/194 , G06T7/60 , G06K9/52 , G06K9/68 , G06K9/00
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

2. 发明授权

US10140546B2 Cloud detection on remote sensing imagery 有权
公开(公告)号：US10140546B2
公开(公告)日：2018-11-27
申请号：US15666347
申请日：2017-08-01
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06K9/52 , G06K9/62 , G06T7/60 , G06K9/00 , G06K9/68 , G06T7/194
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

3. 发明申请

US20210383156A1 CLOUD DETECTION ON REMOTE SENSING IMAGERY 有权
公开(公告)号：US20210383156A1
公开(公告)日：2021-12-09
申请号：US17409278
申请日：2021-08-23
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06K9/00 , G06K9/62 , G06K9/68 , G06K9/40 , G06K9/52 , G06T7/60 , G06T7/194
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

4. 发明授权

US11126886B2 Cloud detection on remote sensing imagery 有权
公开(公告)号：US11126886B2
公开(公告)日：2021-09-21
申请号：US16818428
申请日：2020-03-13
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06K9/00 , G06K9/62 , G06K9/68 , G06K9/40 , G06K9/52 , G06T7/60 , G06T7/194
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

5. 发明授权

US10025983B2 Ponding water detection on satellite imagery 有权
公开(公告)号：US10025983B2
公开(公告)日：2018-07-17
申请号：US14860247
申请日：2015-09-21
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka
IPC分类号： H04N7/18 , G06K9/00
摘要： A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.

6. 发明授权

US10929663B2 Ponding water detection on satellite imagery 有权
公开(公告)号：US10929663B2
公开(公告)日：2021-02-23
申请号：US16596364
申请日：2019-10-08
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka
IPC分类号： H04N7/18 , G06K9/00
摘要： A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.

7. 发明授权

US09721181B2 Cloud detection on remote sensing imagery 有权
公开(公告)号：US09721181B2
公开(公告)日：2017-08-01
申请号：US14960921
申请日：2015-12-07
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06K9/62 , G06T7/60 , G06K9/52 , G06T7/40
CPC分类号： G06K9/4661 , G06K9/0063 , G06K9/4652 , G06K9/52 , G06K9/6257 , G06K9/6267 , G06K9/685 , G06T7/194 , G06T7/60 , G06T2207/30192
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

8. 发明授权

US10467472B2 Ponding water detection on satellite imagery 有权
公开(公告)号：US10467472B2
公开(公告)日：2019-11-05
申请号：US16038006
申请日：2018-07-17
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka
IPC分类号： H04N7/18 , G06K9/00
摘要： A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.

9. 发明申请

US20170357872A1 CLOUD DETECTION ON REMOTE SENSING IMAGERY 审中-公开
公开(公告)号：US20170357872A1
公开(公告)日：2017-12-14
申请号：US15666347
申请日：2017-08-01
申请人： THE CLIMATE CORPORATION
发明人： Wei Guan , Pramithus Khadka , Jeffrey Gerard
IPC分类号： G06K9/46 , G06T7/60 , G06K9/52 , G06K9/00 , G06K9/62 , G06T7/194 , G06K9/68
CPC分类号： G06K9/4661 , G06K9/0063 , G06K9/4652 , G06K9/52 , G06K9/6257 , G06K9/6267 , G06K9/685 , G06T7/194 , G06T7/60 , G06T2207/30192
摘要： A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

10. 发明授权

US11256916B2 Machine learning techniques for identifying clouds and cloud shadows in satellite imagery 有权
公开(公告)号：US11256916B2
公开(公告)日：2022-02-22
申请号：US16657957
申请日：2019-10-18
申请人： The Climate Corporation
发明人： Ying She , Pramithus Khadka , Wei Guan , Xiaoyuan Yang , Demir Devecigil
IPC分类号： G06K9/00 , G06F17/16 , G06N3/04 , G06N20/00
摘要： Systems and methods for identifying clouds and cloud shadows in satellite imagery are described herein. In an embodiment, a system receives a plurality of images of agronomic fields produced using one or more frequency bands. The system also receives corresponding data identifying cloud and cloud shadow locations in the images. The system trains a machine learning system to identify at least cloud locations using the images as inputs and at least data identifying pixels as cloud pixels or non-cloud pixels as outputs. When the system receives one or more particular images of a particular agronomic field produced using the one or more frequency bands, the system uses the one or more particular images as inputs into the machine learning system to identify a plurality of pixels in the one or more particular images as particular cloud locations.

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