A method and system for detecting three-dimensional information of corn ears
A corn ear and detection method technology, applied in the field of computer vision, can solve the problems of long time consumption, long collection and processing time, and high design cost
Active Publication Date: 2017-08-08
CHINA AGRI UNIV
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Problems solved by technology
[0004] A corn ear trait detection device (CN103004322B) uses a roller to obtain full-angle information of the ear, but it takes a long time to collect the full-angle information
The external shape recording and measuring device of corn ears based on stereo vision (CN202160400U) has high design cost and slow acquisition speed, which cannot meet the actual needs of high-throughput measurement
A method for generating a panorama of corn ears using an image sequence (CN101853524A), using a digital camera at a fixed position to shoot an image sequence of corn ears at a certain angle, and operating the image sequence to generate a panorama, but the acquisition and processing time is relatively long
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[0059] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0060] figure 1 A schematic diagram of a three-dimensional phenotype detection method for corn ears according to an embodiment of the present invention is shown. Such as figure 1 As shown, the corn ear three-dimensional phenotype detection method comprises:
[0061] S1: Calibrate the spatial position relationship between the three cameras;
[0062] S2: Obtain the outline of the ear of corn;
[0063] S3: using the three cameras to collect three images of corn ears at different angles, and using the spatial position relationship between the three cameras to construct an orthographic triangulation model;
[0064] S4: Obtain the depth information of the central point of the central axis of the corn ear and any quarter point according to the forward triangulation model, and obtain the depth information of the central point of the central axis of the corn ...
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The invention relates to a corn ear three-dimensional information detection method and a system thereof. The method comprises the following steps: calibrating a space position relation among three cameras; obtaining a contour of the corn ear; using three cameras to collect three images of the corn ear from different angles, using the space position relation among three cameras to construct an equilateral triangle measurement model; obtaining a center point and any quartile depth information of a center pin of the corn ear according to the equilateral triangle measurement model, obtaining positional information of the corn ear in coordinate systems of three cameras according to the corn ear contour and the center point and any quartile depth information of the center pin of the corn ear; obtaining an overlap area of three images from different angles of the corn ear, removing the overlap area, and obtaining three-dimensional phenotypic information of the corn ear. The method and the system can rapidly obtain the three-dimensional phenotypic information of the corn ear and can realize high-flux test requirement.
Description
technical field [0001] The invention relates to the field of computer vision, in particular to a method and system for detecting three-dimensional information of corn ears. Background technique [0002] Maize ear seed testing is an important link in the process of maize crop genetics and breeding, which is of great significance to maize production and scientific research. The geometric shape of corn ears is a spatial rotating body, and one image cannot record all the information. Part of the phenotypic parameters of the ear, such as the number of rows of ears, the number of grains in a row, and bald tips, can only be calculated accurately by collecting 360-degree images. Therefore, it is necessary to measure phenotypic parameters in a three-dimensional mode. [0003] Two images collected from two different viewing angles, due to the different viewing angles, the same point in space will have parallax in the two images. According to this parallax, using the principle of sim...
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IPC IPC(8): A01C1/00G01B11/24
CPCA01C1/00G01B11/24
Inventor 马钦王越朱德海范梦扬周金辉张帆
Owner CHINA AGRI UNIV