scispace - formally typeset
Patent

Method and device for detecting water quality

Reads0
Chats0
TLDR
In this paper, the spectral slope of each pixel in the water area image is used to determine the water quality of a set geographic area, and water quality is determined by analyzing the spectral slopes of the water-area remote sensing image.
Abstract
The invention brings forward a method and a device for detecting water quality The method for detecting water quality comprises the following steps: obtaining a remote sensing image of a set geographic area; carrying out radiometric calibration treatment and atmospheric correction treatment on the remote sensing image to obtain a pretreated remote sensing image; extracting a water area image from the pretreated remote sensing image; and determining water quality of the water area according to spectral slope of each pixel in the water area image According to the above technical scheme, by analyzing the spectral slope of the water-area remote sensing image in the set geographic area, water quality of the water area is determined The analysis data come from the satellite remote sensing images without the need of manual on-site acquisition of water samples Thus, manpower cost can be saved, and efficiency is higher

read more

Citations
More filters
Patent

Method and device for identifying black and smelly water

TL;DR: In this paper, a method and a device for identifying black and smelly water was proposed, which consisted of the following steps: preprocessing an initial high-spatial-resolution remote sensing image to obtain a preprocessed high-sensor-based image; extracting each pixel of the water from the pre-processed image; calculating BOI index value of each pixel according to the Rayleigh scattering reflectivity of different bands and the BOI indexes without accurate atmospheric correction.
Patent

Water body water color anomaly identification method and device based on time sequence remote sensing images

TL;DR: In this paper, a water body water color abnormity identification method and device based on time sequence remote sensing images, and belongs to the field of water environment pollution monitoring, is presented.
Patent

Remote sensing image processing method and device

TL;DR: In this article, a remote sensing image processing method and a device which fuses a panchromatic image and a multi-spectral image of a monitored geographical area to obtain a fused image was described.
Patent

Remote sensing image-based lake and reservoir indicative water quality monitoring station confirming method and device

TL;DR: In this article, a remote sensing image-based lake and reservoir indicative water quality monitoring station confirming method was proposed, which consists of the following steps: acquiring multi-view remote sensing images of a lake and reservoirs at different times; performing preprocessing and cutting to obtain remote sensing reflectance images in a lake region; acquiring a water quality parameter spatial distribution map, and calculating a water-quality parameter threshold range; determining a plurality of groups of alternative stations according to the water quality parameters threshold range, wherein the alternative stations with the occurrence frequency from high to low are the lake and
Patent

A water quality quantitative method based on high resolution remote sensing images

TL;DR: In this article, a water quality quantitative method based on high-resolution remote sensing images was proposed, where a false color is given, through texture analysis and spatial analysis of the features, so that the corrected data can accurately reflect the situation of part of the water body.
References
More filters
Patent

Water body information automatic extraction method for multi-spectral image of remote sensing satellite

TL;DR: A water body information automatic extraction method for a multi-spectral image of a remote sensing satellite comprises the steps of (1) implementing normalized difference water index (NDWI) extraction on apparent reflectivity data of the multispectral image as discussed by the authors, and forming an NDWI image; (2) implementing maximum between-cluster variance algorithm based global threshold segmentation initial water body extraction on the NDWI, and (3) implementing local buffer area expansion and threshold segmentations on the initial waterbody information, and obtaining a stable water body unit result set; and (
Patent

Water source area monitoring and evaluation method

TL;DR: In this paper, a water source area monitoring and evaluation method comprising the steps that: S1, safety evaluations are carried out upon various evaluation indexes of the area according to ground water source data, observation satellite remote sensing data, and auxiliary data thereof; S2, weight coefficients of the evaluation indexes are calculated with an analytic hierarchy process.
Patent

Environment remote sensing application system

TL;DR: In this paper, an environment remote sensing application system, which comprises a business operation and management subsystem, an image processing and special product production subsystem, a data management and subscriber service subsystem and an environment ecology Remote Sensing application subsystem, is presented.
Patent

Permeable band ratio factor-based water depth inversion method

TL;DR: In this article, a neural network water depth inversion model using a single permeable band ratio factor-based neural network inversion was proposed, which is not affected by the seawater type and the undersea sediment.
Patent

Water color exception object extraction method and system based on multi-spectral remote sensing image

TL;DR: In this article, a water color exception object extraction method and system based on multi-spectral remote sensing is presented, which comprises the steps of first acquiring the reflectance of a remote sensing image, then carrying out separation of land and water and cloud removing to obtain remote sensing reflectances of a water area portion, and conducting a principal component analysis of the multiband remote sensing reflectedance to obtain a first principal component; afterwards, conducting a histogram analysis of a first primary component image, setting a threshold, segmenting the first principal components into a target component and a background
Related Papers (5)