A method for accurate extraction of tree canopy temperature based on infrared thermal images

An infrared heat and tree technology, applied in image analysis, image data processing, radiation pyrometry, etc., can solve the problems of large error and low accuracy of tree canopy temperature extraction, and achieve accurate extraction and exclusion of background environments such as soil Interference, the effect of reducing interference

Active Publication Date: 2021-03-23
INST OF FORESTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

[0003] Therefore, in the process of implementing the present application, the inventor found that there are at least the following problems in the prior art: the current extraction accuracy for tree canopy temperature is not high, and the error is relatively large

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  • A method for accurate extraction of tree canopy temperature based on infrared thermal images
  • A method for accurate extraction of tree canopy temperature based on infrared thermal images
  • A method for accurate extraction of tree canopy temperature based on infrared thermal images

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[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0058] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0059] Aiming at the problem that the accuracy of the current tree canopy temperature extraction is not high, this application first uses an infrared thermal imager to collect image information of the target area, and then uses classification methods to effectively eli...

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Abstract

The invention discloses a method for precisely extracting tree canopy temperature based on infrared thermal images. The method comprises the following steps: detecting and obtaining infrared thermal image data of a tree to be detected; extracting all pixel point temperature values in the infrared thermal image data; according to the pixel point temperature values, converting infrared thermal images from color images into grayscale images; according to canopy structure features, determining area range of an irregular tree canopy through corresponding area shapes; and within the area range of the tree canopy, and according to gray values in the grayscale images, extracting corresponding number of pixel points, and obtaining distribution state of the tree canopy temperature. The method can reduce interference of redundant data, especially interference of soil background, and the extracted pixel points can accurately reflect the tree canopy temperature. Therefore, the method for preciselyextracting tree canopy temperature based on the infrared thermal images can accurately extract the tree canopy temperature.

Description

technical field [0001] The invention relates to the related technical field of tree canopy temperature extraction, in particular to a method for accurately extracting tree canopy temperature based on infrared thermal images. Background technique [0002] Since 1963, scientists have been studying and monitoring plant growth and development through the temperature of plant canopies. At the same time, the rapid development of infrared technology has gradually replaced the original single-point, small-scale, short-period thermocouple temperature measurement technology by infrared thermometers in the measurement of canopy temperature. Since then, with the requirements for spatial and temporal resolution, a more universal thermal infrared imaging system has been produced, which has achieved high-resolution, long-term, and continuous monitoring requirements. Due to the high planting density of crops, and the growth can form a continuous canopy with a high degree of uniformity, whi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G01J5/00
Inventor 孙圣张劲松孙守家何春霞黄辉尹昌君施生绵
Owner INST OF FORESTRY CHINESE ACAD OF FORESTRY
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