Hot water meter reading content conversion system

Abstract

The present invention relates to a hot water meter reading content conversion system, comprising: a real-time meter reading device, which is used to perform real-time meter reading processing of visual data acquisition on a target hot water meter when a first detection command is received, so as to obtain and output a corresponding real-time meter reading screen; a strategy adjustment mechanism, which is used to determine the size of a reference coding block used for inter-frame coding of the real-time meter reading screen based on the maximum noise amplitude of a sub-screen occupied by a reading area. The hot water meter reading content conversion system of the present invention has compact logic and intelligent control. Since it is possible to trigger the meter reading processing of the real-time meter reading screen when it is detected that the target hot water meter is in an operating state, and determine the size of the reference coding block used for inter-frame coding of the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area, more refined inter-frame coding processing can be performed on the meter reading screen with a reading area having a large noise amplitude.

Description

Technical Field

[0001] The invention relates to the field of water meter management, and more specifically to a hot water meter reading content conversion system. Background Art

[0002] Hot water meter is a temperature measuring instrument. According to the medium temperature, it can be divided into cold water meter and hot water meter, and the water temperature of 30℃ is the dividing line. The lower limit temperature of the medium of the hot water meter is 30℃, and the upper limit is 90℃, 130℃ or 180℃. The main control parameters of the hot water meter are the flow rate, common flow rate, overload flow rate, minimum flow rate, boundary flow rate, nominal pressure, maximum allowable working pressure, pressure loss, etc. The selection of hot water meter should first consider the working environment of the hot water meter: such as water temperature, working pressure, working time, metering range and water quality, and then determine the hot water meter caliber according to the design flow rate through the hot water meter to produce the pressure loss of the hot water meter close to or not exceeding the specified value.

[0003] Currently, the image processing of the meter reading screen of the hot water meter does not take into account the importance of its key area, namely the reading area, but adopts a unified image processing mechanism with the same emphasis on each image area of ​​the image, resulting in a lack of focus in image processing. For example, the noise in the reading area in the meter reading screen of the hot water meter varies greatly at different times and locations. It is necessary to select an image processing scheme for the meter reading screen of the hot water meter that focuses on the reading area according to the noise situation, so as to reduce the amount of image processing calculations while ensuring the image processing effect on the reading area. Summary of the invention

[0004] In order to solve the technical problems in the related fields, the present invention provides a hot water meter reading content conversion system, which can trigger the real-time meter reading device arranged just above the target hot water meter to perform real-time meter reading processing of visual data acquisition on the target hot water meter when detecting that the target hot water meter is in operation, so as to obtain and output the corresponding real-time meter reading screen, thereby reducing unnecessary meter reading actions and reducing system energy loss, and performing grayscale transformation enhancement processing, picture content spatial domain enhancement processing and sharpening processing based on USM filter on the received real-time meter reading screen sequence, so as to obtain and output the sequence enhancement screen of high-quality screen, thereby providing the visual data of the subsequent reading area of ​​the target hot water meter. The positioning provides data guarantee, and the sub-screen occupied by the reading area in the order enhancement screen is identified based on the OCR recognition mechanism, and the size of the reference coding block used for inter-frame coding of the real-time meter reading screen is determined based on the maximum noise amplitude of the sub-screen occupied by the reading area, wherein the size of the reference coding block determined for inter-frame coding of the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area, and the determined reference coding block size is used to perform inter-frame coding processing on the real-time meter reading screen, thereby performing more refined inter-frame coding processing on the meter reading screen with a reading area with a large noise amplitude, taking into account both inter-frame coding efficiency and coding quality.

[0005] According to the present invention, a hot water meter reading content conversion system is provided, the system comprising: A state detection device connected to a target hot water meter, for issuing a first detection command when detecting that the target hot water meter is in an operating state, and for issuing a second detection command when detecting that the target hot water meter is in a dormant state; A real-time meter reading device, arranged just above the target hot water meter and wirelessly connected to the state detection device, for performing real-time meter reading processing of visual data acquisition on the target hot water meter upon receiving the first detection command, so as to obtain and output a corresponding real-time meter reading screen; An order enhancement device, connected to the real-time meter reading device and comprising a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, for performing grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order, so as to obtain and output a corresponding order enhanced picture; A reading recognition mechanism, connected to the order enhancement device, is used to recognize the sub-picture occupied by the reading area in the order enhancement picture based on the OCR recognition mechanism; A strategy adjustment mechanism, connected to the reading identification mechanism, for determining the size of a reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area; A coding processing mechanism connected to the strategy adjustment mechanism, used to perform inter-frame coding processing on the real-time meter reading picture by using the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading picture; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area comprises: the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area further includes: detecting various noise types in the sub-screen occupied by the reading area, obtaining amplitudes of various noise types corresponding to the sub-screen occupied by the reading area, and taking the maximum value of the amplitudes as the maximum noise amplitude of the sub-screen occupied by the reading area; Among them, the order enhancement device is connected to the real-time meter reading device and includes a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, which is used to perform grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order to obtain and output the corresponding order enhanced picture. The primary enhancement unit, the secondary enhancement unit and the final enhancement unit are connected in order.

[0006] Therefore, the present invention has at least the following three beneficial technical effects: Firstly: when it is detected that the target hot water meter is in operation, the real-time meter reading device arranged directly above the target hot water meter is triggered to perform real-time meter reading processing of visual data acquisition on the target hot water meter, so as to obtain and output the corresponding real-time meter reading screen, thereby reducing unnecessary meter reading actions and reducing system energy loss; Secondly: grayscale transformation enhancement processing, image content spatial domain enhancement processing and sharpening processing based on USM filter are performed on the received real-time meter reading image sequence to obtain and output a sequence enhancement image of high-quality image, thereby providing data guarantee for the subsequent visual positioning of the reading area of ​​the target hot water meter; Again: based on the OCR recognition mechanism, the sub-screen occupied by the reading area in the order enhancement screen is identified, and based on the maximum noise amplitude of the sub-screen occupied by the reading area, the size of the reference coding block used for inter-frame coding of the real-time meter reading screen is determined, wherein the determined size of the reference coding block used for inter-frame coding of the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area, and the determined size of the reference coding block is used to perform inter-frame coding processing on the real-time meter reading screen, thereby performing more refined inter-frame coding processing on the meter reading screen with a reading area with a large noise amplitude, taking into account both inter-frame coding efficiency and coding quality.

[0007] The hot water meter reading content conversion system of the present invention has compact logic and intelligent control. When the target hot water meter is detected to be in operation, the meter reading process of the real-time meter reading screen is triggered, and the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is determined based on the maximum noise amplitude of the sub-screen occupied by the reading area, so that more refined inter-frame coding processing can be performed on the meter reading screen with a reading area with a large noise amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Those skilled in the art may better understand the numerous advantages of the present invention by referring to the accompanying drawings, in which:

[0009] Figure 1 It is a schematic diagram of the internal structure of the hot water meter reading content conversion system according to the first embodiment of the present invention.

[0010] Figure 2 It is a schematic diagram of the internal structure of a hot water meter reading content conversion system according to a second embodiment of the present invention.

[0011] Figure 3 It is a schematic diagram of the internal structure of a hot water meter reading content conversion system according to a third embodiment of the present invention. DETAILED DESCRIPTION

[0012] The implementation scheme of the hot water meter reading content conversion system of the present invention will be described in detail below with reference to the accompanying drawings.

[0013] Figure 1 1 is a schematic diagram of the internal structure of a hot water meter reading content conversion system according to a first embodiment of the present invention, the system comprising: A state detection device connected to a target hot water meter, for issuing a first detection command when detecting that the target hot water meter is in an operating state, and for issuing a second detection command when detecting that the target hot water meter is in a dormant state; Specifically, a SOC chip may be selected to implement the state detection device, connected to the target hot water meter, and used to issue a first detection command when detecting that the target hot water meter is in an operating state, and also used to issue a second detection command when detecting that the target hot water meter is in a dormant state; A real-time meter reading device, arranged just above the target hot water meter and wirelessly connected to the state detection device, for performing real-time meter reading processing of visual data acquisition on the target hot water meter upon receiving the first detection command, so as to obtain and output a corresponding real-time meter reading screen; An order enhancement device, connected to the real-time meter reading device and comprising a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, for performing grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order, so as to obtain and output a corresponding order enhanced picture; A reading recognition mechanism, connected to the order enhancement device, is used to recognize the sub-picture occupied by the reading area in the order enhancement picture based on the OCR recognition mechanism; A strategy adjustment mechanism, connected to the reading identification mechanism, for determining the size of a reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area; A coding processing mechanism connected to the strategy adjustment mechanism, used to perform inter-frame coding processing on the real-time meter reading picture by using the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading picture; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area comprises: the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area further includes: detecting various noise types in the sub-screen occupied by the reading area, obtaining amplitudes of various noise types corresponding to the sub-screen occupied by the reading area, and taking the maximum value of the amplitudes as the maximum noise amplitude of the sub-screen occupied by the reading area; Wherein, the order enhancement device is connected to the real-time meter reading device and includes a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, and is used to perform grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order to obtain and output the corresponding order enhanced picture, including: the primary enhancement unit, the secondary enhancement unit and the final enhancement unit are sequentially connected; The determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area, including: the smaller the maximum noise amplitude of the sub-screen occupied by the reading area, the smaller the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen; And wherein, the real-time meter reading device is further used to stop the real-time meter reading process of visual data collection for the target hot water meter when receiving the second detection command.

[0014] Figure 2 It is a schematic diagram of the internal structure of a hot water meter reading content conversion system according to a second embodiment of the present invention.

[0015] and Figure 1 different, Figure 2 The hot water meter reading content conversion system in the invention can also include the following components: A lighting execution component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device; Among them, the lighting execution component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device, including: the lighting execution component is used to respectively realize the auxiliary lighting operation at the scene where the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device are respectively located.

[0016] Figure 3 It is a schematic diagram of the internal structure of a hot water meter reading content conversion system according to a third embodiment of the present invention.

[0017] and Figure 1 different, Figure 3 The hot water meter reading content conversion system in the invention can also include the following components: an oscillation generating component, which is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device; The oscillation generating component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device, and includes: the oscillation generating component is used to respectively realize the supply of working clock sequences to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device.

[0018] Next, the specific structure of the hot water meter reading content conversion system of the present invention will be further described.

[0019] In the hot water meter reading content conversion system according to any embodiment of the present invention: A GPU processing device is used to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device respectively.

[0020] In the hot water meter reading content conversion system according to any embodiment of the present invention: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing statistical sorting filtering on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

[0021] In the hot water meter reading content conversion system according to any embodiment of the present invention: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing cubic polynomial interpolation on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

[0022] In the hot water meter reading content conversion system according to any embodiment of the present invention: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing non-scaling transformation blur on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

[0023] And in the hot water meter reading content conversion system according to any embodiment of the present invention: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing Prewitt operator sharpening on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

[0024] In addition, in the hot water meter reading content conversion system, the order enhancement device is connected to the real-time meter reading device and includes a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, which is used to perform grayscale transformation enhancement processing, picture content spatial domain enhancement processing and sharpening processing based on USM filter on the received real-time meter reading picture order to obtain and output the corresponding order enhanced picture, including: the primary enhancement unit, the secondary enhancement unit and the final enhancement unit respectively perform grayscale transformation enhancement processing, picture content spatial domain enhancement processing and sharpening processing based on USM filter corresponding to the received picture signal.

[0025] Although the present invention has been comprehensively described by way of embodiment, it should be understood that various changes and modifications are apparent to those skilled in the art. Therefore, unless otherwise indicated, changes and modifications depart from the scope of the present invention, such changes and modifications should all be considered to be included in the scope of the present invention.

Claims

1. A hot water meter reading content conversion system, characterized in that: The system comprises: A state detection device connected to a target hot water meter, for issuing a first detection command when detecting that the target hot water meter is in an operating state, and for issuing a second detection command when detecting that the target hot water meter is in a dormant state; A real-time meter reading device, arranged just above the target hot water meter and wirelessly connected to the state detection device, for performing real-time meter reading processing of visual data acquisition on the target hot water meter upon receiving the first detection command, so as to obtain and output a corresponding real-time meter reading screen; An order enhancement device, connected to the real-time meter reading device and comprising a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, for performing grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order, so as to obtain and output a corresponding order enhanced picture; A reading recognition mechanism, connected to the order enhancement device, is used to recognize the sub-picture occupied by the reading area in the order enhancement picture based on the OCR recognition mechanism; A strategy adjustment mechanism, connected to the reading identification mechanism, for determining the size of a reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area; A coding processing mechanism connected to the strategy adjustment mechanism, used to perform inter-frame coding processing on the real-time meter reading picture by using the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading picture; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area comprises: the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area; Wherein, determining the size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen based on the maximum noise amplitude of the sub-screen occupied by the reading area further includes: detecting various noise types in the sub-screen occupied by the reading area, obtaining amplitudes of various noise types corresponding to the sub-screen occupied by the reading area, and taking the maximum value of the amplitudes as the maximum noise amplitude of the sub-screen occupied by the reading area; Among them, the order enhancement device is connected to the real-time meter reading device and includes a primary enhancement unit, a secondary enhancement unit and a final enhancement unit, which is used to perform grayscale transformation enhancement processing, picture content spatial domain enhancement processing and USM filter-based sharpening processing on the received real-time meter reading picture order to obtain and output the corresponding order enhanced picture. The primary enhancement unit, the secondary enhancement unit and the final enhancement unit are connected in order.

2. The hot water meter reading content conversion system according to claim 1, characterized in that: The determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen is monotonically inversely correlated with the maximum noise amplitude of the sub-screen occupied by the reading area, including: the smaller the maximum noise amplitude of the sub-screen occupied by the reading area, the smaller the determined size of the reference coding block used for performing inter-frame coding on the real-time meter reading screen; The real-time meter reading device is further configured to stop the real-time meter reading process of visual data collection for the target hot water meter when the second detection command is received.

3. The hot water meter reading content conversion system according to claim 2, characterized in that: The system further comprises: A lighting execution component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device; Among them, the lighting execution component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device, including: the lighting execution component is used to respectively realize the auxiliary lighting operation at the scene where the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device are respectively located.

4. The hot water meter reading content conversion system according to claim 2, characterized in that: The system further comprises: an oscillation generating component, which is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device; The oscillation generating component is arranged near the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device and is respectively connected to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device, and includes: the oscillation generating component is used to respectively realize the supply of working clock sequences to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device.

5. The hot water meter reading content conversion system according to any one of claims 2 to 4, characterized in that: A GPU processing device is used to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit and the real-time meter reading device respectively.

6. The hot water meter reading content conversion system according to claim 5, characterized in that: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing statistical sorting filtering on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

7. The hot water meter reading content conversion system according to claim 5, characterized in that: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing cubic polynomial interpolation on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

8. The hot water meter reading content conversion system according to claim 5, characterized in that: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing non-scaling transformation blur on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain the output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

9. The hot water meter reading content conversion system according to claim 5, characterized in that: Using a GPU processing device to perform image data processing on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively includes: performing Prewitt operator sharpening on the output data of the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device to obtain output processing data corresponding to the primary enhancement unit, the secondary enhancement unit, the final enhancement unit, and the real-time meter reading device respectively.

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