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公开(公告)号：US20240212188A1
公开(公告)日：2024-06-27
申请号：US18542709
申请日：2023-12-17
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Zhihang Song
IPC: G06T7/64
CPC classification number: G06T7/64 , G06T2207/10076 , G06T2207/30188
Abstract: A method for spatial analysis of leaf images is disclosed which includes acquiring one or more leaf images of plants, generating 3-dimensional (3D) images from the acquired one or more images from spectral heatmaps, identifying a stem and a plurality of veins, identifying i) one or more of valleys and ridges as regions between two consecutive veins from the plurality of veins, or ii) one or more of peaks and valleys as regions between two consecutive veins from the plurality of veins in the one or more generated 3D images, calculating average slopes in the generated 3D images between i) one or more of peak-to-valley, or ii) ridge-to-valley for the veins, calculating a nitrogen index based on the calculated average slopes, if the calculated average slope is between two thresholds, communicate to a user to add a predetermined chemical to the plants.
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公开(公告)号：US11538194B2
公开(公告)日：2022-12-27
申请号：US17239686
申请日：2021-04-26
Applicant: Purdue Research Foundation
Inventor： Jian Jin
Abstract: A reference imaging system including a planar reference piece. The reference imaging system further includes a three-axis gantry for positioning the planar reference piece at a plurality of points in a 3D coordinate system. Additionally, the reference imaging system includes a yaw actuator for adjusting the yaw angle of the object. Furthermore, the reference imaging system includes a pitch actuator for adjusting the pitch of the object. Moreover, the reference imaging system includes a computer processing unit for controlling the 3D position, pitch and yaw of the planar reference piece.
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公开(公告)号：US11536663B2
公开(公告)日：2022-12-27
申请号：US16658838
申请日：2019-10-21
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Xiaohui Song
Abstract: A portable apparatus for analyzing a plant specimen. A housing assembly defines a sensing volume and controls entry of ambient light into the sensing volume when the housing is closed. A specimen support positions a plant specimen within the sensing volume whereby light emitted from at least one light emitter is incident upon the plant specimen. An image sensor senses light from the at least one light emitter that has been incident on the plant specimen. A processor analyzes data obtained from the light sensor to assess one or more properties of the plant specimen. There may be more than one light emitter, e.g., a halogen lamp and LED array, and the apparatus may acquire images under more than one lighting condition. The apparatus may include a mechanism for moving the plant specimen relative to the optical path to take images at multiple regions of interest on the specimen.
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公开(公告)号：US10527540B2
公开(公告)日：2020-01-07
申请号：US15893189
申请日：2018-02-09
Applicant: Purdue Research Foundation
Inventor： Jian Jin
Abstract: An imaging system for a smartphone includes a housing configured to rigidly attach to a handheld smartphone device. The system further includes an arm extending from the housing, wherein the arm is configured to be adjustable such that the arm is movable toward and away from the housing. Additionally, the system includes a sample mounting portion attached to the arm, the mounting portion having a retaining device, wherein the retaining device is configured to secure a target sample, the mounting portion configured to direct an image of the target sample to a first camera in the handheld smartphone device.
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公开(公告)号：US11481958B2
公开(公告)日：2022-10-25
申请号：US16923045
申请日：2020-07-07
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Wei Qiu , Zhihang Song , Liangju Wang
Abstract: A root imaging system is disclosed which includes a robotic arm, a camera coupled to the robotic arm, the robotic arm configured to insert the camera into the soil at predefined coordinates, a processor system configured to receive user-defined data about a plant of interest, define insertion points about the plant of interest based on the user-defined data, control the robotic arm to thereby insert the camera into the soil at defined insertion points, obtain images from the camera positioned at the insertion points, analyze the images for presence of roots, and identify the images having roots and combine that with image 3D location information for 3D structure reconstruction of the entire root structure.
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Patent Agency Ranking
公开(公告)号：US20210005011A1
公开(公告)日：2021-01-07
申请号：US16923045
申请日：2020-07-07
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Wei Qiu , Zhihang Song , Liangju Wang
Abstract: A root imaging system is disclosed which includes a robotic arm, a camera coupled to the robotic arm, the robotic arm configured to insert the camera into the soil at predefined coordinates, a processor system configured to receive user-defined data about a plant of interest, define insertion points about the plant of interest based on the user-defined data, control the robotic arm to thereby insert the camera into the soil at defined insertion points, obtain images from the camera positioned at the insertion points, analyze the images for presence of roots, and identify the images having roots and combine that with image 3D location information for 3D structure reconstruction of the entire root structure.
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公开(公告)号：US20240428584A1
公开(公告)日：2024-12-26
申请号：US18748010
申请日：2024-06-19
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Jinnuo Zhang
Abstract: A method of calibrating hyperspectral images to account for diurnal changes is disclosed which includes receiving a plurality of hyperspectral images obtained over a plurality of days from a field, deriving a plurality of spectra from the received plurality of hyperspectral images, decomposing the derived plurality of spectra into a trend component representing a trend associated with the plurality of days, subtracting the trend component from the derived plurality of spectra to thereby generate diurnal spectra for one or more wavelengths, fitting one or more mathematical functions associating spectrum to time of day to the generated diurnal spectra for each of the one or more wavelengths, generating a mode from the fitted mathematical function for each of the one or more wavelengths, and applying the model to the derived spectra at a first time to generate a calibrated spectra at a second time.
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公开(公告)号：US20220357634A1
公开(公告)日：2022-11-10
申请号：US17736758
申请日：2022-05-04
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Liangju Wang , Jialei Wang , Yikai Li
Abstract: A method and system are disclosed for providing consistent images of leaves of plants, including articulating a lower case of a housing with respect to an upper case via an imaging chamber articulation mechanism from i) a closed state to ii) an open state, the articulable space forms an imaging chamber which is dark when the imaging chamber articulation mechanism is in the closed state, placing the leaf within the imaging chamber, articulating the imaging chamber articulation mechanism to the closed state, activating one or more light sources, actuating a linear actuator to thereby linearly move a camera from i) an initial position to ii) an end position, obtaining images from the camera, re-actuating the linear actuator to thereby linearly move the camera from the end position to the initial position, re-articulating the lower case to the open state, and removing the leaf.
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公开(公告)号：US20190331590A1
公开(公告)日：2019-10-31
申请号：US15893189
申请日：2018-02-09
Applicant: Purdue Research Foundation
Inventor： Jian Jin
Abstract: An imaging system for a smartphone includes a housing configured to rigidly attach to a handheld smartphone device. The system further includes an arm extending from the housing, wherein the arm is configured to be adjustable such that the arm is movable toward and away from the housing. Additionally, the system includes a sample mounting portion attached to the arm, the mounting portion having a retaining device, wherein the retaining device is configured to secure a target sample, the mounting portion configured to direct an image of the target sample to a first camera in the handheld smartphone device.
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公开(公告)号：US11815461B2
公开(公告)日：2023-11-14
申请号：US18080709
申请日：2022-12-13
Applicant: Purdue Research Foundation
Inventor： Jian Jin , Xiaohui Song
CPC classification number: G01N21/6486 , G01N21/6456 , G01N21/84 , H04N23/51 , H04N23/56 , H04N23/57 , H04N25/71 , H04N25/76 , G01N2021/8466 , G01N2201/0221
Abstract: A portable apparatus for analyzing a plant specimen. A housing assembly defines a sensing volume and controls entry of ambient light into the sensing volume when the housing is closed. A specimen support positions a plant specimen within the sensing volume whereby light emitted from at least one light emitter is incident upon the plant specimen. An image sensor senses light from the at least one light emitter that has been incident on the plant specimen. A processor analyzes data obtained from the light sensor to assess one or more properties of the plant specimen. There may be more than one light emitter, e.g., a halogen lamp and LED array, and the apparatus may acquire images under more than one lighting condition. The apparatus may include a mechanism for moving the plant specimen relative to the optical path to take images at multiple regions of interest on the specimen.
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