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Neural network-based manually annotated white blood cell error calibration method and device

A neural network and manual labeling technology, applied in the field of computer vision, can solve the problems of high misdiagnosis rate, small number of cell classifications, cumbersome procedures, etc., and achieve the effect of increasing the accuracy rate and reducing the time for manual judgment.

Active Publication Date: 2018-05-11
NANJING UNIV
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AI Technical Summary

Problems solved by technology

[0006] The above-mentioned blood detection process has the following disadvantages: the steps of detecting blood cells are cumbersome, it is necessary to roughly detect 5 types of cells first, and then re-test for a specific cell, and the detection rate of misdiagnosis is high
And the number of cell classifications is too small, only 5 categories can be distinguished, and some small classification cells that affect disease detection cannot be recognized; if you want to increase the recognition of a small classification, you need to add a series of measures such as dyes, which are expensive. cumbersome procedures

Method used

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  • Neural network-based manually annotated white blood cell error calibration method and device
  • Neural network-based manually annotated white blood cell error calibration method and device
  • Neural network-based manually annotated white blood cell error calibration method and device

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Embodiment 1

[0032] This embodiment provides a neural network-based error calibration method for manual labeling of white blood cells, see Figure 6 , including:

[0033] S1: Map the original RGB image into the HSV space and separate the S channel.

[0034] Microscopic images of peripheral blood smears include white blood cells, red blood cells, and platelets, among others. After staining, the white blood cell nuclei and platelets are purple, the white blood cell plasma is light purple, and the red blood cells are light pink. Use the DP27 camera to take pictures of blood cells and send them to the computer to obtain the original RGB images.

[0035] First try to separate the RGB channels, and found that under these three channels, various types of cells in the image cannot be effectively distinguished. Map the RGB image to the HSV space, and separate the three channels of H, S, and V. It is found that in the S channel, the discrimination of various blood cells is the highest.

[0036] ...

Embodiment 2

[0070] see Figure 7 , this embodiment provides a neural network-based error calibration device for artificially labeling white blood cells, including:

[0071] An original image acquisition module 201, configured to acquire an original microscopic image of white blood cells;

[0072] This device uses a combination of an Olympus microscope and a DP27 camera to acquire raw images. Under the condition of magnification of 400 times, the image was collected after adding immersion oil, and a tif image with a resolution of 2448×1920 was obtained.

[0073] An image preprocessing module 202, configured to locate the white blood cell part in the blood cell microscopic image;

[0074] Specifically, taking a blood smear taken under a 400X microscope as an example, one picture contains several white blood cells and numerous red blood cells. Firstly, the white blood cells are roughly segmented from the large image using the threshold value, and saved as a picture of a specified size. Th...

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Abstract

The present invention discloses a neural network-based manually annotated white blood cell error calibration method and device. The calibration method comprises the steps of S1 obtaining an original image; S2 pre-processing the image; S3 segmenting the white blood cells and extracting the edge pixel point coordinates of the cells; S4 selecting the cells having the obvious characteristics as the training data and using the other cells as the test data to train a network; S5 using a softmax classifier to score the test cells, and dividing the test cells into the concrete categories and the sub-categories according to the scores; S6 carrying out the polar coordinate data enhancement on the training cells and the sub-category cells; S7 retaining the enhanced training images, using the sub-category images to test and scoring; S8 according the scores, rejecting the cells that are not within the appointed categories and dividing the other cells into the concrete categories. According to thepresent invention, during the classification process, the interference cells that are meaningless to the classification can be rejected, and the peripheral blood white blood cells can be classified into a plurality of small categories, thereby increasing the cell classification accuracy substantially.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to an error calibration method and device for artificially marking white blood cells based on a neural network. Background technique [0002] In recent years, with the rapid development of artificial intelligence in various fields, how to use artificial intelligence to replace doctors' manual operations to detect and classify various cells in medical pathology detection has become a hot issue of widespread concern. The process of artificial intelligence detecting and classifying cells is as follows: First, obtain the labeled training samples of the cells to be detected, learn the characteristics of each classification after training the neural network, and then input the test cells into the network, and the network can , to intelligently classify cells. [0003] At present, in the medical laboratory department, the existing blood testing process is roughly divided into two steps: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G01N15/00
CPCG01N15/00G06V20/695G06V20/698G01N15/01
Inventor 曹汛洪羽萌沈瀚闫锋张丽敏杨程蔡悦夏永泉李智洋
Owner NANJING UNIV
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