Wound surface area automatic calculation method, device and system and storage medium

Abstract

The invention provides a wound surface area automatic calculation method, device and system and a storage medium. The wound surface area automatic calculation method comprises the following steps: S1, collecting a digital image containing a scald wound surface through a camera device, shooting the image in a non-real-time manner, and uploading the image to an attached standard ruler; and S2, during real-time measurement, measuring the distance between the wound surface and the camera, calculating the radius of a picture shot by the camera device by using a trigonometric function, and further calculating the shooting area corresponding to the shot picture. And calculating the number of pixel points in a unit area according to the pixels of the shot picture. During non-real-time shooting, the number of pixels corresponding to the unit length of the standard ruler is measured, and the total area of the image is calculated according to the proportional relation between the actual size of the unit length and the number of the pixels. The wound surface area automatic calculation method, device and system and the storage medium provided by the invention have the advantages that the operation is simple and convenient, the result is objective, accurate measurement of the scald area is realized through digital image analysis, and the clinical evaluation accuracy can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wound area calculation, and in particular to a wound area automatic calculation method, device, system and storage medium. BACKGROUND

[0002] Scalding is one of the common accidental injuries in children, especially in children aged 1-2 years. Scalding not only causes local skin damage, but also can quickly cause systemic disease, and even endanger life in severe cases. In clinical treatment, the calculation of scalding area is crucial, and the percentage of scalding area to total body surface area (TBSA) is usually used as an evaluation standard, which directly affects the amount of fluid replacement, surgical plan and prognosis.

[0003] At present, the commonly used methods for calculating the area of scalding in clinical practice mainly include the "Chinese nine-point method" and the "palm method": Chinese nine-point method: the human body is divided into several regions (such as head and neck, upper limbs, trunk, lower limbs, etc.), and each region accounts for a fixed percentage of body surface area (such as head and neck 9%, single upper limb 9%, etc.). This method is suitable for adults, but due to the difference in body proportions between children and adults, direct application may result in large errors.

[0004] Palm method: the area of the patient's palm (fingers together) is about 1% of the body surface area for estimation, which is suitable for small area scalding, but is highly subjective and difficult to accurately calculate large area or irregular wounds.

[0005] The above methods rely on empirical visual estimation and have the following defects: Large human error: different doctors' evaluation results may have significant differences, affecting the accuracy of treatment plans; Poor applicability to children: the proportion of body surface area in children is different from that in adults, and traditional methods are difficult to accurately adapt; Difficulty in calculating irregular wounds: for irregularly shaped scalding areas (such as scattered distribution, blurred edges of wounds), the error of visual estimation is further increased.

[0006] In clinical practice, the calculation error of scalding area may lead to inaccurate fluid replacement, which in turn affects the effect of fluid resuscitation. For example, overestimating the area of scalding may lead to excessive fluid replacement, increasing the load on the heart; while underestimating may lead to insufficient circulation, delaying treatment.

[0007] In the prior art, some digital measurement schemes have tried to solve this problem. For example, a method and device for calculating the area of an irregular figure are disclosed in the prior art, which comprises the following steps: collecting an image of the irregular figure to obtain a first image; collecting an image of a reference figure to obtain a second image, wherein the area S of the reference figure is known, and the collection conditions of the first image and the second image are the same; comparing the first image with the second image, and calculating the area A of the irregular figure according to the area S of the reference figure. According to the method and device for calculating the area, it is applicable to any irregular figure, and the calculation process is convenient and fast, and the calculation result is accurate However, this method needs to rely on a specific reference object, and is not optimized for medical images (such as burn wounds), and cannot be directly applied to clinical practice. In addition, the prior art usually needs manual labeling of standard rulers or relies on fixed shooting conditions, which is complex and difficult to promote in medical scenarios.

[0008] Therefore, it is necessary to provide a burn wound area automatic calculation method, device, system and storage medium to solve the above technical problems. SUMMARY

[0009] The technical problem solved by the present application is to provide a burn wound area automatic calculation method, device, system and storage medium which is simple to operate, objective in result, realizes accurate measurement of burn wound area through digital image analysis, and can significantly improve the accuracy of clinical evaluation.

[0010] To solve the above technical problems, the burn wound area automatic calculation method provided by the present application comprises the following steps: S1: collecting a digital image containing a burn wound area by a camera device, and uploading a standard ruler with a non-real-time shooting picture; S2: when measuring in real time, measuring the distance between the wound area and the camera, calculating the radius of the shooting picture of the camera device by using trigonometric functions, and then calculating the shooting area corresponding to the shooting picture, and calculating the number of pixel points in a unit area according to the pixels of the shooting picture; when shooting in non-real time, measuring the number of pixels corresponding to the unit length of the standard ruler, and calculating the total area of the image according to the proportional relationship between the actual size of the unit length and the number of pixel points; S3: identifying the burn wound area in the image: reading the RGB values of each pixel point, taking the normal skin area as the RGB reference area, and automatically identifying the pixel points with an RGB difference within a predetermined threshold range from the reference area as the wound area; S4: manually correcting the automatically identified wound area, and eliminating the misidentified area; S5: counting the number of pixel points in the corrected wound area, and calculating the actual area of the burn wound according to the proportional relationship between the number of wound pixel points and the total number of image pixel points.

[0011] Preferably, in S2, the camera is integrated with an ultrasonic or infrared ranging probe, the distance between the wound and the camera is measured, the imaging radius is calculated by combining the camera imaging angle and the trigonometric function, and then the image collection range is calculated by using the area formula of a circle.

[0012] Preferably, in S3, the determination of the RGB difference threshold value comprises: calculating the average RGB value by selecting at least three normal skin sample areas, and setting the range of the Euclidean distance difference from the average RGB value as the recognition threshold.

[0013] Preferably, in S2, when the image is a non-real-time photographed image uploaded, pixel proportion calculation is performed after manually marking a standard ruler unit length.

[0014] The application also provides a wound area automatic calculation device, comprising: an image collection module for collecting a digital image containing a scald wound by a camera; a distance measurement module integrated with an ultrasonic or infrared ranging probe for measuring the distance between the wound and the camera; an area calculation module for calculating the actual area of the image collection range according to the distance data and the camera imaging angle; an image processing module for identifying the scald wound area in the image and calculating the actual wound area; a correction module for manually correcting the automatically identified wound area.

[0015] The application also provides a wound area automatic calculation system, comprising: a terminal device for collecting a digital image containing a scald wound; a server in communication connection with the terminal device for receiving the digital image and performing wound area calculation; a display device for displaying the wound area calculation result and the image processing process; a storage device for storing the wound image data and the calculation result.

[0016] Compared with the related art, the wound area automatic calculation method, device, system and storage medium provided by the application have the following beneficial effects: The application provides a wound area automatic calculation method, device, system and storage medium, realizes high-precision and automatic wound measurement through digital image analysis and standard size proportion conversion, effectively overcomes subjective errors of a traditional visual estimation method and poor child applicability and the like, the method is simple to operate, can be completed by only ordinary intelligent equipment, and supports manual correction, and is particularly suitable for accurate measurement of irregular wounds. The clinical value lies in providing an objective basis for fluid replacement calculation and treatment scheme formulation, and the method has good expansibility, can be popularized to other skin damage evaluation and remote medical application, and significantly improves the scientificity and practicality of burn area calculation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The imaging radius calculation principle diagram of the wound area automatic calculation method, device, system and storage medium provided by the application. DETAILED DESCRIPTION

[0018] The application will be further described below in combination with the drawings and embodiments.

[0019] Please refer to Figure 1 , wherein, Figure 1 The imaging radius calculation principle diagram of the wound area automatic calculation method, device, system and storage medium provided by the application. The wound area automatic calculation method comprises the following steps: Step one: an ultrasonic / infrared transceiving probe is arranged in front of a camera to identify the distance between a wound and the camera; Step two: the imaging angle of the camera is used to calculate the imaging radius by a trigonometric function; Step three: the area formula of a circle is used to Calculate the area of a photo; Step four: if the photo is uploaded, a unit length (1 cm) is selected, the software automatically calculates the number of pixel points of the unit length and calculates the total area of the wound; Step five: the RGB value corresponding to each pixel point is read; Step six: the normal skin area is circled as an RGB contrast area; Step seven: the pixel points in a certain RGB difference interval of the contrast area are automatically identified as the wound; Step eight: manual correction: the misidentified area can be manually removed; Step nine: the number of pixel points of the automatically identified area after correction is calculated; Step ten: the area of the wound is calculated according to the proportion of the pixel points in the total pixel points.

[0020] The application further provides a wound area automatic calculation device, comprising: An image acquisition module is configured to acquire a digital image containing a scald wound surface by using a camera device; A distance measurement module is integrated with an ultrasonic or infrared ranging probe, and is configured to measure the distance between the wound surface and the camera device; An area calculation module is configured to calculate the actual area of the image acquisition range according to the distance data and the imaging angle of the camera device; An image processing module is configured to identify the scald wound surface area in the image and calculate the actual area of the wound surface; A correction module is configured to manually correct the wound surface area identified automatically.

[0021] The present application also provides a wound surface area automatic calculation system, comprising: A terminal device is configured to acquire a digital image containing a scald wound surface; A server is in communication connection with the terminal device, and is configured to receive the digital image and perform wound surface area calculation; A display device is configured to display the wound surface area calculation result and the image processing process; A storage device is configured to store the wound surface image data and the calculation result.

[0022] Compared with the related art, the present application provides a wound surface area automatic calculation method, device, system and storage medium, which has the following beneficial effects: The present application provides a wound surface area automatic calculation method, device, system and storage medium, which realizes high-precision and automatic wound surface measurement through digital image analysis and standard size proportion conversion, effectively overcomes the subjective error of the traditional visual estimation method and the poor child applicability, and has the advantages of simple operation, support for manual correction, and particularly suitable for precise measurement of irregular wound surfaces. The clinical value of the present application lies in providing an objective basis for fluid replacement calculation and treatment scheme formulation, and at the same time, the present application has good expansibility and can be extended to other skin damage evaluation and telemedicine applications, thereby significantly improving the scientificity and practicability of scald area calculation.

[0023] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which is based on the content of the specification and drawings of the present application, is also included in the patent protection scope of the present application.

Claims

1. A method for automatically calculating wound area, characterized in that, Includes the following steps: S1: Digital images containing burn wounds are captured by a camera device. Non-real-time images are uploaded with a standard ruler. S2: In real-time measurement, the distance between the wound and the camera is measured, the radius of the image captured by the camera is calculated using trigonometric functions, and then the corresponding shooting area is calculated. Based on the pixels of the captured image, the number of pixels per unit area is calculated. In non-real-time shooting, the number of pixels per unit length of the standard ruler is measured, and the total area of ​​the image is calculated based on the ratio between the actual size of the unit length and the number of pixels. S3: Identify burn wound areas in images: By reading the RGB values ​​of each pixel, and using the normal skin area as the RGB control area, automatically identify pixels whose RGB difference with the control area is within a predetermined threshold range as the burn area. S4: Manually correct the automatically identified wound areas and eliminate misidentified areas; S5: Count the number of pixels in the wound area after correction, and calculate the actual area of ​​the burn wound based on the ratio of the number of pixels in the wound area to the total number of pixels in the image.

2. The method for automatically calculating wound area according to claim 1, characterized in that, In step S2, the camera device integrates an ultrasonic or infrared ranging probe. By measuring the distance between the wound and the camera device, and combining the camera's imaging angle and trigonometric functions, the imaging radius is calculated, and then the image acquisition range is calculated using the area formula of a circle.

3. The method for automatically calculating wound area according to claim 1, characterized in that, In step S3, determining the RGB difference threshold includes: selecting at least three normal skin sample regions to calculate the average RGB value, and setting the Euclidean distance difference range from the average RGB value as the recognition threshold.

4. The method for automatically calculating wound area according to claim 1, characterized in that, In step S2, when the image is an uploaded, non-real-time captured image, the pixel ratio is calculated after manually marking the unit length of a standard ruler.

5. An automatic wound area calculation device, characterized in that, include: The image acquisition module is used to acquire digital images containing burn wounds via a camera device; The distance measurement module integrates an ultrasonic or infrared ranging probe for measuring the distance between the wound and the camera device; The area calculation module is used to calculate the actual area of ​​the image acquisition range based on distance data and the camera imaging angle. The image processing module is used to identify the burn wound area in the image and calculate the actual area of ​​the wound; The correction module is used to manually correct the automatically identified wound areas.

6. An automatic wound area calculation system, characterized in that, include: Terminal equipment used to acquire digital images containing burn wounds; The server is communicatively connected to the terminal device and is used to receive the digital image and perform wound area calculation. Display device used to display the wound area calculation results and image processing process; Storage devices used to store wound image data and calculation results.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the automatic wound area calculation method as described in any one of claims 1-4.

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