Rice-ear-grain nondestructive counting method and system based on contour information multiscale analysis
A multi-scale analysis and contour information technology, which is applied in counting and agricultural fields, can solve the problems that the correction coefficient cannot be effectively determined, the counting accuracy is not high enough, and it can be modified.
Active Publication Date: 2018-09-25
兰桂骐农业科技(上海)有限公司
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This method improves the counting accuracy, but there are still some shortcomings, such as the correction coefficient cannot be effectively determined, a large number of samples are required for linear regression determination, and the correction coefficient is a fixed value that cannot be modified according to the different degrees of overlap between rice panicles , causing the counting accuracy is not high enough
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[0186] figure 2 For the images obtained by shooting the measured rice spikes, the image preprocessing steps include grayscale, binarization, circle detection, erosion and expansion, and hole filling. Grayscale processing and binarization processing can separate the rice ear image from the background, circle detection is used to detect and remove the black circular magnet in the picture, corrosion and expansion processing are used to remove the branches of the rice ear in the picture, and hole filling Used to fill incompletely divided holes in rice ears. The binary image obtained after the above processing is as follows: image 3 As shown, there are 22 connected regions in the figure. The main axis in the connected region obtained after the one-dimensional sequence acquisition step of the measured rice ear is as follows: Figure 4 shown.
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The invention provides a rice-ear-grain nondestructive counting method based on contour information multiscale analysis. The method comprises the following steps of a contour fluctuation frequency acquisition step: acquiring the reference contour fluctuation frequency f0 of a connected region formed by reference rice ears under a non-overlapping condition, and the counting contour fluctuation frequency f' of the connected region formed by measured rice ears; and a rice ear grain number calculation step: taking a frequency ratio f'/f0 as a correction factor, and according to the correction factor, calculating a measured rice ear grain number. Correspondingly, the invention also provides a rice-ear-grain nondestructive counting system based on the contour information multiscale analysis. Compared with a lossy threshing type rice ear counting method, by using the method of the invention, a calculating speed is fast, counting precision is comparable, operation is simple and only one picture needs to be shot, threshing operation does not need to perform, the integrity of the single rice ear is not destroyed, and a high-throughput rice ear grain counting requirement can be satisfied.
Description
technical field [0001] The invention relates to the fields of agriculture and counting, in particular to a non-destructive counting method and system for rice spikes and grains based on multi-scale analysis of contour information. Background technique [0002] In rice breeding research, rice phenotypic traits play an extremely important role in high-quality breeding research. Among them, the grain trait parameter of rice grain per ear directly reflects the yield of rice. Therefore, it is of great significance for rice breeding to realize accurate and efficient counting of the number of grains per rice panicle. The existing rice ear grain counting method mainly is divided into two kinds. One is to use a threshing mechanism to remove the rice spikes from the branches, and then use a photoelectric sensor to count. This counting method has high precision, but it belongs to destructive detection and destroys the integrity of the plant, and the counting method is complicated and...
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IPC IPC(8): G06T7/187G06T7/00G06T7/62
CPCG06T7/0002G06T7/187G06T7/62G06T2207/30242
Inventor 刘成良林可贡亮吴伟袁政张大兵
Owner 兰桂骐农业科技(上海)有限公司
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