A spectral identification and sorting device for monochrome porcelain fragments

Abstract

The application discloses a kind of spectral identification and sorting device suitable for monochrome porcelain fragments.It includes support, ceramic fragment conveying mechanism is horizontally arranged on support, imaging station is arranged on ceramic fragment conveying mechanism;Camera height adjustment mechanism is vertically arranged on support, camera height adjustment mechanism is located above the input end of ceramic fragment conveying mechanism, hyperspectral imaging camera is equipped on camera height adjustment mechanism, the lens of hyperspectral imaging camera is towards imaging station on ceramic fragment conveying mechanism;Frame light source unit is also provided on support, frame light source unit is located above ceramic fragment conveying mechanism and covers imaging station;Sorting execution mechanism is also provided on support, sorting execution mechanism is located at the output end of ceramic fragment conveying mechanism;Spectral identification and sorting device suitable for monochrome porcelain fragments also includes control unit, control unit is signal connected with ceramic fragment conveying mechanism, hyperspectral imaging camera and sorting execution mechanism respectively.

Description

Technical Field

[0001] This invention belongs to the field of cultural relic restoration technology, specifically relating to a spectral identification and sorting device suitable for monochrome glazed porcelain fragments. Background Technology

[0002] As irreplaceable historical carriers, ceramic artifacts are of paramount importance for preservation. However, due to long-term underground burial and exposure to soil pressure, environmental corrosion, and temperature and humidity changes, the structure of the body and glaze is prone to deterioration and weakening, making them highly susceptible to damage from external forces during excavation, preservation, and subsequent restoration. In traditional restoration operations, restorers primarily rely on visual observation of the glaze color, body, and fragment edges, judging matching relationships based on experience. This manual identification method has several prominent problems: first, prolonged work can easily lead to visual fatigue and decreased efficiency; second, ceramic fractures are often worn, missing, or covered by contaminants, making the characteristics of the fracture edges unclear and difficult to accurately piece together; and third, the restoration results heavily depend on the operator's experience, are highly subjective and lack precision, and pose a risk of the interruption of the transmission of skills.

[0003] The rapidly developing 3D digital technology has been applied to the field of cultural relic restoration. Among them, 3D printing technology can efficiently produce ceramic cultural relic accessories with precise shapes and personalized customization through digital modeling and layer-by-layer manufacturing, including technologies such as fused deposition modeling (FDM), stereolithography (SLA), and digital light processing (DLP). Its disadvantages are: reliance on manual molding may cause secondary damage to the cultural relic, and the precision is limited. In addition, the technology is costly and difficult to scale up. Therefore, current 3D printing-based methods for cultural relic restoration still have significant limitations in application.

[0004] In summary, existing technologies lack an efficient, objective, and non-destructive automated identification and sorting technique for ceramic fragments, making it difficult to meet the practical needs of large-scale ceramic artifact restoration work. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of the prior art and provide a spectral identification and sorting device suitable for monochrome glazed porcelain fragments.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows: The spectral identification and sorting device for monochrome glazed porcelain fragments includes a support frame, on which a ceramic fragment conveying mechanism (1) is horizontally mounted, and an imaging station is mounted on the ceramic fragment conveying mechanism (1); a camera height adjustment mechanism (2) is vertically mounted on the support frame. The camera height adjustment mechanism (2) is located above the input end of the ceramic fragment conveying mechanism (1). The camera height adjustment mechanism (2) is equipped with a hyperspectral imaging camera (3), and the lens of the hyperspectral imaging camera (3) faces the imaging station on the ceramic fragment conveying mechanism (1). The bracket is also equipped with a frame-type light source unit (4), which is located above the ceramic fragment conveying mechanism (1) and covers the imaging station. The bracket is also equipped with a sorting execution mechanism (6), which is located at the output end of the ceramic fragment conveying mechanism (1). The spectral identification and sorting device suitable for monochrome glazed porcelain fragments also includes a control unit (5), which is connected to the ceramic fragment conveying mechanism (1) (for coordinating the conveying speed and image acquisition), the hyperspectral imaging camera (3) (for receiving and processing spectral image data), and the sorting execution mechanism (6) respectively.

[0007] Preferably, the camera height adjustment mechanism (2) includes a support frame (21) connected to the bracket and a vertical slide rail (22) disposed on the support frame (21); the hyperspectral imaging camera (3) is connected to the vertical slide rail (22) via a slider (23), and the slider (23) and the vertical slide rail (22) form a sliding pair, so that the hyperspectral imaging camera (3) can slide up and down along the vertical slide rail (22) for adjustment.

[0008] Preferably, the frame-type light source unit (4) includes a gate-shaped bracket (41) and a light source group (42). The gate-shaped bracket (41) spans across and is fixed to both sides of the ceramic fragment conveying mechanism (1), and forms a viewing window (43) inside. The light source group (42) is located inside the gate-shaped bracket (41).

[0009] More preferably, the light source group (42) includes two light source units respectively disposed at the front and rear positions inside the gate-shaped bracket (41). Each light source unit is composed of multiple aperture light sources (421). The aperture light sources (421) are light sources that emit a continuous spectrum and are used to provide uniform illumination for the imaging station.

[0010] More preferably, the aperture light source (421) is a halogen lamp light source.

[0011] Preferably, the bracket is also provided with a drive motor (11) for driving the ceramic fragment conveying mechanism (1), and the control unit (5) is signal connected to the drive motor (11).

[0012] Preferably, the sorting actuator (6) includes a drive (61), a sorting lever (62), and multiple, preferably four, sorting guide slots (63); the drive (61) is signal-connected to the control unit (5) and drives the sorting lever (62) to swing; the sorting lever (62) is an arm-shaped structure that can swing back and forth, and guides ceramic fragments into the corresponding sorting guide slots (63) by swinging.

[0013] More preferably, the driving component (61) is a rotating electromagnet or a miniature electric push rod; the sorting guide trough (63) is an inclined channel arranged side by side, and a collection container is provided below the lower end of the inclined channel.

[0014] More preferably, the control unit (5) includes a data processing module and a sorting control module; the data processing module is used to receive spectral image data acquired by the hyperspectral imaging camera (3), perform radiometric calibration, region segmentation, spectral averaging and feature extraction on the data, and construct feature vectors characterizing the spectral properties of the fragments; the sorting control module is used to perform classification analysis on the feature vectors using an unsupervised clustering algorithm, generate control commands based on the classification results, and control the sorting lever (62) to guide the ceramic fragments to the corresponding sorting guide groove (63).

[0015] Preferably, the ceramic fragment conveying mechanism (1) is a belt conveyor.

[0016] The present invention will be further described below: The spectral identification and sorting device for monochrome glazed porcelain fragments described in this invention includes a support, a ceramic fragment conveying mechanism, a camera height adjustment mechanism, a hyperspectral imaging camera, a frame-type light source unit, a control unit, and a sorting execution mechanism.

[0017] The ceramic fragment conveying mechanism 1 is horizontally positioned to carry and uniformly convey ceramic fragments to be identified. Preferably, the ceramic fragment conveying mechanism 1 is a belt conveyor, including a drive motor 11, a driving roller, a driven roller, and a circular conveyor belt. The drive motor 11 is signal-connected to the control unit 5, which coordinates the conveying speed with the image acquisition timing of the hyperspectral imaging camera 3, ensuring that each fragment is completely acquired as it passes through the imaging station. The uniform movement of the ceramic fragment conveying mechanism creates conditions for continuous fragment processing, improving the processing efficiency of the device.

[0018] The camera height adjustment mechanism 2 is vertically positioned adjacent to the input end of the ceramic fragment conveying mechanism 1. The camera height adjustment mechanism 2 includes a support frame 21 and a vertical slide rail 22. The support frame 21 is vertically positioned, and the vertical slide rail 22 is fixedly mounted on the support frame 21. The hyperspectral imaging camera 3 is connected to the vertical slide rail 22 via a slider 23. The slider 23 and the vertical slide rail 22 form a sliding pair, allowing the hyperspectral imaging camera 3 to slide up and down along the vertical slide rail 22. By adjusting the height of the hyperspectral imaging camera 3, it can accommodate ceramic fragments of different sizes, ensuring optimal matching of image clarity and focal length.

[0019] The hyperspectral imaging camera 3 is connected to the slider 23 of the camera height adjustment mechanism 2, with its lens facing the imaging station of the ceramic fragment conveying mechanism 1. The imaging station refers to the area on the ceramic fragment conveying mechanism 1 located directly below the lens of the hyperspectral imaging camera 3, where it can be clearly imaged. Preferably, the hyperspectral imaging camera 3 is a pushbroom hyperspectral imaging camera with a working wavelength range of 400-1000 nm and a spectral resolution of 2.62 nm. As the core sensing unit, the hyperspectral imaging camera 3, during the scanning process, uses a beam splitter to separate the reflected light from each spatial point on the fragment surface into spectral channels, capturing a two-dimensional spatial image of the fragment and recording a complete and continuous reflectance spectrum curve for each pixel in the image. Finally, the system generates a three-dimensional hyperspectral data cube for each fragment that passes through.

[0020] A frame-type light source unit 4 is positioned above the ceramic fragment conveying mechanism 1 and covers the imaging station. The frame-type light source unit 4 includes a portal frame 41 and a light source assembly 42. The portal frame 41 spans across and is fixed to both sides of the ceramic fragment conveying mechanism 1, forming a viewing window 43 inside. The light source assembly 42 is located inside the portal frame 41 and is used to provide uniform illumination for the imaging station.

[0021] As a preferred embodiment, the light source group 42 includes two light source units respectively positioned at the front and rear of the inner side of the portal frame 41. Each light source unit consists of multiple aperture-type light sources 421. The aperture-type light sources 421 are light sources that emit a continuous spectrum, preferably halogen lamp light sources. Halogen lamp light sources have the advantages of good spectral continuity and high stability, and can provide high-quality illumination conditions for hyperspectral imaging. Through the cooperation of the two light source units, shadows and uneven illumination can be eliminated, ensuring the uniformity of illumination at the imaging station and improving the quality and reliability of spectral data acquisition.

[0022] The control unit 5 is connected to both the hyperspectral imaging camera 3 and the sorting actuator 6 via signals. It receives and processes spectral image data and controls the operation of the sorting actuator 6 based on the processing results. The control unit 5 can be an industrial computer, an embedded controller, or a high-performance computer, and includes a data processing module and a sorting control module.

[0023] The data processing module receives spectral image data acquired by the hyperspectral imaging camera 3 and performs the following processing on the data: 1. Radiation calibration and preprocessing: Dark current correction and reference whiteboard correction are performed on the raw data to convert the digital signal into accurate reflectivity data and eliminate equipment and environmental noise.

[0024] 2. Region Segmentation and Spectral Averaging: Spatially, individual fragment regions are identified from the background using image segmentation algorithms. The average of the spectra of all pixels within this region is then taken to obtain a representative spectral curve for the fragment.

[0025] 3. Feature Vector Construction: Mathematical analysis is performed on the obtained representative spectral curves to extract spectral feature values ​​that can quantitatively distinguish different individuals or categories. These features are directly related to the physical properties of the material. For example, the first or second derivative of the spectrum is calculated to accurately identify the position and width of weak absorption peaks that are indistinguishable to the human eye; or the reflectance ratio and slope between specific bands are calculated to quantify subtle differences in color; or the depth, area, and symmetry of obvious absorption valleys are calculated. Multiple selected spectral feature values ​​are combined to form a digital feature vector characterizing the spectral reflectance properties of the fragment surface.

[0026] The sorting control module uses an unsupervised clustering algorithm to classify and analyze feature vectors, and generates control commands based on the classification results. Preferably, the unsupervised clustering algorithm is K-means clustering or hierarchical clustering. After accumulating a certain number of fragment feature vectors, the control unit 5 uses the unsupervised clustering algorithm to perform a batch analysis on these vectors, automatically identifying potential category clusters in the data, assigning a sorting guide slot to each cluster, and storing the centers of these clusters as category feature centers in the database for subsequent real-time comparison and sorting of individual fragments.

[0027] The sorting actuator 6 is located at the output end of the ceramic fragment conveying mechanism 1, and includes a drive unit 61, a sorting lever 62, and four sorting guide grooves 63. The drive unit 61 is signal-connected to the control unit 5 and drives the sorting lever 62 to swing. Preferably, the drive unit 61 is a rotary electromagnet or a miniature electric push rod, which has the advantages of fast response speed and high control accuracy.

[0028] The sorting lever 62 is a reciprocating swing arm-shaped structure, and its initial position is located on one side of the output end of the ceramic fragment conveying mechanism 1. The sorting lever 62 is controlled by the drive unit 61 and can swing between different angle positions to change the movement trajectory of the fragments.

[0029] The sorting guide 63 consists of parallel inclined channels, with its upper end connected to the edge of the output end of the ceramic fragment conveying mechanism 1, and a collection container located below its lower end. The inclined channel utilizes gravity to allow the fragments guided into the channel to slide smoothly into the collection container, facilitating subsequent centralized processing.

[0030] The specific design of this invention enables continuous and automated transport and positioning of ceramic fragments, creating conditions for efficient non-contact inspection. Through the cooperation of a hyperspectral imaging camera and a light source unit, stable and accurate acquisition of the spectral characteristics of the fragment surface is achieved, transforming traditional subjective color identification into objective, quantitative data. Furthermore, with the linkage between the control unit and the sorting execution mechanism, real-time and automatic preliminary physical classification of the fragments can be performed based on the spectral analysis results. The entire device significantly improves work efficiency, avoids damage to cultural relics, and provides accurate and reliable digital data for subsequent manual reassembly and restoration.

[0031] Compared with the prior art, the present invention has the following beneficial effects: 1. A complete automated processing flow is formed by the uniform conveying of ceramic fragments by the ceramic fragment conveying mechanism, the spectral data acquisition by the hyperspectral imaging camera, the data processing and sorting control of the control unit, and the physical sorting by the sorting execution mechanism, which significantly improves work efficiency and reduces the intensity of manual labor.

[0032] 2. It enables non-destructive testing of cultural relics. Hyperspectral imaging uses the visible light band for non-contact data acquisition, avoiding the potential damage to cultural relics caused by traditional restoration methods such as molding and physical contact, and effectively protecting the cultural relics themselves.

[0033] 3. The frame-type light source unit provides uniform and stable illumination conditions. The configuration of the light source group inside the portal frame ensures uniform illumination of the imaging station, eliminating the impact of uneven illumination on spectral data acquisition and improving the stability and reliability of data acquisition.

[0034] 4. The camera height adjustment mechanism is flexible and adjustable. Through the cooperation of the vertical slide rail and the slider, the height of the hyperspectral imaging camera can be adjusted according to the size of the debris and the focal length requirements, ensuring optimal image quality.

[0035] 5. The sorting execution mechanism achieves precise physical sorting. By controlling the movement of the sorting levers through the control unit, different fragments can be separated into corresponding sorting guides based on spectral analysis results, realizing the physical representation of data and providing an accurate and reliable classification basis for subsequent manual reassembly and repair. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and beneficial effects of the embodiments of the present invention clearer, further descriptions will be provided below in conjunction with specific implementations of the present invention. These embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Other implementation methods obtained by those skilled in the art based on the embodiments disclosed in the present invention without creative effort should all fall within the scope of protection of the present invention. Example 1

[0038] See Figure 1 The spectral identification and sorting device for monochrome glazed porcelain fragments includes a support frame, on which a ceramic fragment conveying mechanism 1 is horizontally mounted, and an imaging station is mounted on the ceramic fragment conveying mechanism 1. A camera height adjustment mechanism 2 is vertically mounted on the support frame, located above the input end of the ceramic fragment conveying mechanism 1. A hyperspectral imaging camera 3 is mounted on the camera height adjustment mechanism 2, with its lens facing the imaging station on the ceramic fragment conveying mechanism 1. A frame-type light source unit 4 is also mounted on the support frame, located above the ceramic fragment conveying mechanism 1 and covering the imaging station. A sorting execution mechanism 6 is also mounted on the support frame, located at the output end of the ceramic fragment conveying mechanism 1. The spectral identification and sorting device for monochrome glazed porcelain fragments also includes a control unit 5, which is connected to the ceramic fragment conveying mechanism 1 for coordinating conveying speed and image acquisition, the hyperspectral imaging camera 3 for receiving and processing spectral image data, and the sorting execution mechanism 6 for signal connection.

[0039] The camera height adjustment mechanism 2 includes a support frame 21 connected to the bracket and a vertical slide rail 22 mounted on the support frame 21. The hyperspectral imaging camera 3 is connected to the vertical slide rail 22 via a slider 23. The slider 23 and the vertical slide rail 22 form a sliding pair, allowing the hyperspectral imaging camera 3 to slide up and down along the vertical slide rail 22 for adjustment. The frame-type light source unit 4 includes a portal frame 41 and a light source group 42. The portal frame 41 spans and is fixed to both sides of the ceramic fragment conveying mechanism 1, forming a viewing window 43 inside. The light source group 42 is located inside the portal frame 41. The light source group 42 includes two light source units respectively located at the front and rear positions inside the portal frame 41. Each light source unit consists of multiple aperture-type light sources 421. The aperture-type light sources 421 are light sources that emit a continuous spectrum and are used to provide uniform illumination for the imaging station. The aperture-type light sources 421 are halogen lamp light sources. The support is also equipped with a drive motor 11 for driving the ceramic fragment conveying mechanism 1, and the control unit 5 is signal-connected to the drive motor 11. The sorting execution mechanism 6 includes a drive component 61, a sorting lever 62, and multiple, preferably four, sorting guide grooves 63; the drive component 61 is signal-connected to the control unit 5 and drives the sorting lever 62 to swing; the sorting lever 62 is a reciprocating arm-shaped structure that guides ceramic fragments into the corresponding sorting guide groove 63 by swinging. The drive component 61 is a rotating electromagnet or a miniature electric push rod; the sorting guide grooves 63 are inclined channels arranged side by side, and a collection container is provided below the lower end of the inclined channel. The control unit 5 includes a data processing module and a sorting control module. The data processing module receives spectral image data acquired by the hyperspectral imaging camera 3, performs radiometric calibration, region segmentation, spectral averaging, and feature extraction on the data, and constructs feature vectors characterizing the spectral properties of the fragments. The sorting control module uses an unsupervised clustering algorithm to classify and analyze the feature vectors, generates control commands based on the classification results, and controls the sorting lever 62 to guide the ceramic fragments to the corresponding sorting guide trough 63. The ceramic fragment conveying mechanism 1 is a belt conveyor. Example 2

[0040] Taking a batch of white porcelain fragments as an example, the process of classifying them using the spectral identification and sorting device described in Embodiment 1 of this invention is as follows: S1: Automated transport and hyperspectral data cube acquisition: The white porcelain fragments to be classified are placed on a horizontal ceramic fragment conveying mechanism and sequentially pass through the scanning field of view of a hyperspectral imaging camera. The hyperspectral imaging camera, as the core sensing unit, uses a beam-splitting element during scanning to separate the reflected light from each spatial point on the fragment surface into spectral channels, capturing a two-dimensional spatial image of the fragment and recording a complete and continuous reflectance spectrum curve for each pixel in the image. Finally, the system generates a three-dimensional hyperspectral data cube for each fragment that passes through.

[0041] S2: Spectral Data Processing and Feature Extraction The control unit receives and processes the spectral image data and performs the following analysis procedure: Radiation calibration and preprocessing: Dark current correction and reference whiteboard correction are performed on the raw data to convert the digital signal into accurate reflectivity data and eliminate equipment and environmental noise.

[0042] Region segmentation and spectral averaging: In the spatial dimension, individual fragment regions are identified from the background using image segmentation algorithms. The average spectrum of all pixels within this region is then calculated.

[0043] Feature vector construction: Mathematical analysis is performed on the obtained representative average spectral image curves to extract spectral feature values ​​that can quantitatively distinguish different individuals or categories. These features are directly related to the physical properties of the material. For example, the first or second derivative of the spectrum is calculated to accurately identify the position and width of weak absorption peaks that are indistinguishable to the human eye; or the reflectance ratio and slope between specific bands are calculated to quantify subtle differences in color. For obvious absorption valleys, their depth, area, symmetry, etc., are calculated. The selected spectral feature values ​​are combined to form a digital feature vector characterizing the spectral reflectance properties of the white porcelain fragment surface.

[0044] S3: Dynamic sorting in real-time database clustering analysis: After accumulating a certain number of fragment feature vectors, an unsupervised clustering algorithm is used to perform a batch analysis on these vectors, automatically identifying potential category clusters in the data, assigning a sorting guide slot to each cluster, and storing the centers of these clusters as category feature centers in the database for subsequent real-time comparison and sorting of individual fragments.

[0045] S4: Physical sorting and collection guided by spatial positioning: While the control unit signal completes the classification decision, it combines the spatial location information of the fragments in the hyperspectral image to generate control commands containing category labels and coordinates. After receiving the command, the sorting lever located at the output end of the ceramic fragment conveying mechanism conveys the white porcelain fragments into the sorting guide trough, and finally into the collection container.

Claims

1. A spectral identification and sorting device suitable for monochrome glazed porcelain fragments, characterized in that, The spectral identification and sorting device for monochrome glazed porcelain fragments includes a support frame, on which a ceramic fragment conveying mechanism (1) is horizontally mounted, and an imaging station is mounted on the ceramic fragment conveying mechanism (1); a camera height adjustment mechanism (2) is vertically mounted on the support frame, and the camera height adjustment mechanism (2) is located above the input end of the ceramic fragment conveying mechanism (1), and a hyperspectral imaging camera (3) is mounted on the camera height adjustment mechanism (2), with the lens of the hyperspectral imaging camera (3) facing the imaging station on the ceramic fragment conveying mechanism (1); a frame-type light source unit (4) is also mounted on the support frame, and the frame-type light source unit (4) is located above the ceramic fragment conveying mechanism (1) and covers the imaging station; a sorting execution mechanism (6) is also mounted on the support frame, and the sorting execution mechanism (6) is located at the output end of the ceramic fragment conveying mechanism (1); the spectral identification and sorting device for monochrome glazed porcelain fragments also includes a control unit (5), which is signal-connected to the ceramic fragment conveying mechanism (1), the hyperspectral imaging camera (3), and the sorting execution mechanism (6).

2. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 1, characterized in that, The camera height adjustment mechanism (2) includes a support frame (21) connected to the bracket and a vertical slide rail (22) set on the support frame (21); the hyperspectral imaging camera (3) is connected to the vertical slide rail (22) through a slider (23), and the slider (23) and the vertical slide rail (22) form a sliding pair, so that the hyperspectral imaging camera (3) can slide up and down along the vertical slide rail (22) for adjustment.

3. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 1, characterized in that, The frame-type light source unit (4) includes a gate-shaped bracket (41) and a light source group (42). The gate-shaped bracket (41) spans and is fixed to both sides of the ceramic fragment conveying mechanism (1), and forms a viewing window (43) inside. The light source group (42) is located inside the gate-shaped bracket (41).

4. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 3, characterized in that, The light source group (42) includes two light source units respectively located at the front and rear positions inside the gate-shaped bracket (41). Each light source unit is composed of multiple aperture light sources (421), and the aperture light sources (421) are light sources that emit continuous spectrum.

5. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 4, characterized in that, The aperture-type light source (421) is a halogen lamp light source.

6. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 1, characterized in that, The bracket is also equipped with a drive motor (11) for driving the ceramic fragment conveying mechanism (1), and the control unit (5) is connected to the drive motor (11) by signal.

7. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 1, characterized in that, The sorting actuator (6) includes a drive (61), a sorting lever (62), and multiple sorting guide slots (63); the drive (61) is signal-connected to the control unit (5) and drives the sorting lever (62) to swing; the sorting lever (62) is an arm-shaped structure that can swing back and forth, and guides ceramic fragments into the corresponding sorting guide slots (63) by swinging.

8. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 7, characterized in that, The driving component (61) is a rotating electromagnet or a miniature electric push rod; the sorting guide trough (63) is an inclined channel arranged side by side, and a collection container is provided below the lower end of the inclined channel.

9. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in claim 7, characterized in that, The control unit (5) includes a data processing module and a sorting control module. The data processing module is used to receive spectral image data collected by the hyperspectral imaging camera (3), perform radiometric calibration, region segmentation, spectral averaging and feature extraction on the data, and construct feature vectors that characterize the spectral properties of the fragments. The sorting control module is used to classify and analyze the feature vectors using an unsupervised clustering algorithm, generate control commands based on the classification results, and control the sorting lever (62) to guide the ceramic fragments to the corresponding sorting guide groove (63).

10. The spectral identification and sorting device for monochrome glazed porcelain fragments as described in any one of claims 1 to 9, characterized in that, The ceramic fragment conveying mechanism (1) is a belt conveyor.

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