An automatic measurement device for finished garment sizes

Abstract

This invention relates to an automatic garment size measuring device, comprising: a worktable, a vision recognition system, a light source system, and a vision signal processing system. The worktable has at least one flat work surface, and a top support mechanism is provided vertically above the work surface. The light source system and the vision recognition system are mounted above the worktable via the top support mechanism, with their illumination directions facing the work surface. The vision recognition system is signal-connected to the vision signal processing system, enabling accurate and rapid size measurement of different garments. This simplifies manual operation, improves work efficiency, reduces measurement errors, allows for zoom measurement of different garments, acquires clear inspection images, and provides comparable and traceable inspection results.

Description

Technical Field

[0001] This invention relates to a garment measurement system, and more particularly to an automatic garment size measurement device. Background Technology

[0002] In many aspects of the garment industry, it is necessary to measure the size of garments in order to meet the required standards for production.

[0003] In traditional clothing size measurement, manual methods are often used, which are quite cumbersome. First, the garment needs to be laid flat, and then a measuring tape is used to measure various parts of the garment. The data is then recorded. There are many types of clothing, and the production volume is huge, so the number of garments that need to be measured is also very large. Secondly, manual measurement has many problems: the testers are fatigued, the measurement progress is slow, and the measurement cost is high. Due to human factors, the measurement standards and results often differ greatly and cannot be standardized.

[0004] With the progress of social development, most clothing measurements nowadays use three-dimensional human models for measurement. However, this method requires measuring the size of the garment on a mechanical structure or mannequin, or taking multiple pictures from multiple angles. The mannequin also needs to be measured before use. This involves multiple steps, which is not an effective way to improve measurement efficiency and accuracy for the large number of garments that the garment manufacturing industry needs to measure.

[0005] Therefore, existing garment size measurement technologies suffer from low measurement efficiency, low measurement accuracy, and complex manual operation. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention discloses an automatic measurement device for finished garment dimensions, comprising: a worktable, a vision recognition system, a light source system, and a vision signal processing system. The worktable has at least one flat work surface, and a top support mechanism is provided vertically above the work surface. The light source system and the vision recognition system are mounted above the worktable via the top support mechanism, and the illumination direction of the vision recognition system and the light source system is directed towards the work surface. The vision recognition system is signal-connected to the vision signal processing system.

[0007] Specifically, the visual recognition system includes an industrial camera, a lens, and an adapter ring. The industrial camera is mounted on a support mechanism on the top of the workbench, and the shooting area of ​​the industrial camera faces the workbench surface. The lens is mounted on the industrial camera via the adapter ring.

[0008] Specifically, the visual recognition system also includes a locking device mounted on the lens.

[0009] Specifically, the light source system includes: a vertical main light source and / or a side light source facing the workbench surface. The vertical main light source is fixedly mounted on the top support mechanism of the workbench, and the side light source is set at an angle to the illumination direction of the vertical main light source. The side light source is also fixedly mounted on the top support mechanism of the workbench and / or on the workbench surface.

[0010] Specifically, the light source system also includes a worktable light curtain, which is disposed on the worktable surface.

[0011] Specifically, the workbench also includes a workbench back panel and a workbench shield, which are arranged around the workbench surface and have a diffuse reflective surface on the side facing the workbench surface.

[0012] Specifically, it also includes a garment shaping device set on the workbench. The garment shaping device includes a telescopic cylinder, a telescopic displacement output end, and a flattening component. The telescopic cylinder is fixedly installed vertically above the workbench. The flattening component is connected to the telescopic cylinder through the telescopic displacement output end. When the telescopic displacement output end extends, it drives the flattening component to press against the workbench.

[0013] Specifically, the telescopic cylinder is fixedly connected to the workbench baffle, and the bottom of the telescopic cylinder is a space for the telescopic displacement output end to extend and retract. The garment shaping device and the side light source are arranged alternately so that the light emitted by the side light source can illuminate the workbench surface and be reflected by the workbench baffle.

[0014] Specifically, the visual signal processing system includes: a signal processor connected to a signal receiving unit and a system control unit respectively; the system control unit connected to a signal transmitting unit; the signal transmitting unit and the signal receiving unit respectively connected to the visual recognition system for receiving and transmitting signals; the signal processor for processing the signals received by the signal receiving unit; and the system control unit for controlling signals, judging detection results, and setting information.

[0015] Furthermore, the visual signal processing system processes the visual signal through the following steps:

[0016] a. Set size information;

[0017] Standard size information can be added, modified, and saved through the system controller;

[0018] b. Send a signal;

[0019] The system controller sends a detection signal to the signal transmitting unit, which then transmits the signal to the visual recognition system.

[0020] c signal processing;

[0021] The signal receiving unit receives the visual signals transmitted by the visual recognition system, and the signal processor converts them into size information and image information and sends them to the system control unit;

[0022] d. Image display and data comparison;

[0023] The system control unit displays image and size information, compares it with standard size information, obtains the comparison result, and determines whether the detection is complete. It then resends any undetected detection signals to the signal transmitting unit until the detection is complete.

[0024] Specifically, the processing steps of the visual signal processing system are as follows:

[0025] Step a also includes: setting image reference points;

[0026] When the system control unit acquires the detection image for the first time, it sets the image detection reference point as the detection point for the garment to be inspected.

[0027] Specifically, the processing steps of the visual signal processing system are as follows:

[0028] In step a, an image reference point is set, with X and Y as the horizontal and vertical coordinates of the object to be measured, and Z as the height coordinate of the object to be measured. When measuring the X and Y coordinates, the Z coordinate of the image reference point, which is set in step a, does not change with the measurement.

[0029] Specifically, the processing steps of the visual signal processing system are as follows: after setting the Z coordinate of the image reference point, the lens does not focus.

[0030] Specifically, the processing steps of the visual signal processing system are as follows: after the Z-coordinate of the image reference point is set, the lens zooms, but the Z-coordinate value does not change with the lens zoom.

[0031] Specifically, the processing steps of the visual signal processing system further include:

[0032] e. Delete size information

[0033] The system control department deletes the added dimension information.

[0034] Specifically, the processing steps of the visual signal processing system further include:

[0035] f. Rollback operation

[0036] The system control unit deletes the measured information, reverts to the specified step, and resends the detection signal.

[0037] Advantages and effects

[0038] This invention provides an automatic measurement device for finished garment dimensions, which has the following advantages:

[0039] 1. The automatic garment size measuring device of the present invention can accurately measure the size of different garments and achieve rapid measurement, simplifying manual operation steps and improving work efficiency.

[0040] 2. The automatic measurement device for finished garment dimensions of the present invention can reduce measurement errors, perform zoom measurement for different garments, obtain clear detection images, and make the detection results comparable and traceable.

[0041] 3. The automatic measurement device for finished garment dimensions of the present invention can maintain constant detection coordinates during detection, preventing the camera from repeatedly focusing due to uneven clothing, which would affect the processing speed. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the automatic garment size measuring device of the present invention;

[0043] Figure 2 This is a schematic diagram of the visual recognition system of the present invention;

[0044] Figure 3 This is a schematic diagram of the garment shaping device of the present invention;

[0045] Figure 4 This is a schematic diagram of the visual signal processing system of the present invention;

[0046] Figure 5 This is a flowchart of the operation steps of the visual signal processing system of the present invention.

[0047] Legend: 1. Workbench; 11. Workbench surface; 12. Workbench support; 13. Workbench back panel; 14. Workbench baffle; 2. Vision recognition system; 21. Industrial camera; 22. Lens; 23. Extension ring; 24. Locking device; 3. Light source system; 31. Vertical main light source; 32. Side light source; 33. Workbench light curtain; 4. Garment shaping device; 41. Telescopic cylinder; 42. Telescopic displacement output end; 43. Pressure plate; 5. Vision signal processing system; 51. Signal processor; 52. Signal receiving unit; 53. Signal transmitting unit; 54. System control unit. Detailed Implementation

[0048] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0049] This invention relates to an automatic measurement device for finished garment dimensions, such as... Figure 1As shown, it includes a worktable 1, a vision recognition system 2, a light source system 3, and a vision signal processing system 5. The worktable 1 has at least one flat work surface 11, and a top support mechanism 12 is set vertically above the work surface 11. The light source system 3 and the vision recognition system 2 are set above the worktable through the top support mechanism 12, and the illumination direction of the vision recognition system 2 and the light source system 3 is set towards the work surface 11. The vision recognition system 2 is signal-connected to the vision signal processing system 5. During operation, the garment to be measured is placed on the work surface 11, the power is turned on, and the light source system 3 is activated to provide light for the garment measurement, ensuring that the vision recognition system 2 can clearly capture the edge connection points of the garment, thereby achieving the effect of accurate measurement of garment size. During measurement, the vision recognition system 2 located above the worktable takes a picture of the garment, and then transmits the captured image to the vision signal processing system 5 in the form of a signal. The image is processed and measured, and the standard size data of the garment is stored for comparison with the standard size in subsequent measurements, thereby achieving the effect of speeding up the measurement.

[0050] like Figure 2 As shown, the visual recognition system 2 includes an industrial camera 21, a lens 22, and an adapter ring 23. The industrial camera 21 is mounted on the top support mechanism 12 of the workbench, with its shooting area facing the workbench surface 11. The lens 22 is mounted on the industrial camera 21 via the adapter ring 23. When measuring the size of clothing, the lens 22 is connected to the top support mechanism 12 of the workbench via the industrial camera 21 and the adapter ring 23, ensuring that the lens 22 is horizontal with the workbench surface 11. This ensures that the lens 22 is in a completely vertical state when taking pictures of the clothing on the workbench surface 11, guaranteeing the accuracy of the size measurement. Specifically, the lens 22 of the visual recognition system 2 can be selected from F-8014, FL-HC1214, or H40X1045DCP-IR, etc.

[0051] Since the lens 22 needs to zoom when measuring different garments, the visual recognition system 2 also includes a locking device 24 to prevent the lens from falling off after frequent zooming. The locking device 24 is mounted on the lens 22. The locking device 24 protects the lens 22 and the adapter ring 23, preventing the lens 22 from falling off due to over-adjustment. The locking device 24 is not directly connected to the lens 22, reducing wear and tear on the lens 22 during use.

[0052] To further ensure the lifespan of lens 22 and reduce edge errors during image capture by vision system 2, light source system 3 includes: a pendant main light source 31 and / or a side light source 32 facing the worktable surface 11. The pendant main light source 31 is fixedly mounted on the top support mechanism 12 of the worktable, and the side light source 32 is angled to the direction of illumination of the pendant main light source 31, and is also fixedly mounted on the top support mechanism 12 and / or the worktable surface 11. When vision recognition system 2 is taking pictures, the pendant main light source 31 provides the main large-area light source to ensure the clarity of clothing images. However, the pendant main light source 31 also leaves shadows at the edges of the clothing after vertically illuminating it. By setting the side light source 32, edge shadows can be reduced, thereby achieving a clearer image of the clothing captured by vision recognition system 2. This further reduces visual errors caused by shadows at the edges. Simultaneously, because the edges of the clothing are illuminated more clearly, the need for significant lens zoom is reduced, extending the lifespan of the equipment. Specifically, incandescent lamps or color-changing light sources can be used to enhance the color difference between the light and the clothing.

[0053] To further reduce errors during clothing photography, the light source system 3 also includes a worktable light curtain 33. The worktable light curtain 33 is positioned on the worktable surface 11. During operation, the clothing is laid flat on the worktable surface 11, and the worktable light curtain 33 is opened. The light from the worktable light curtain 33 shines from the bottom to the top of the worktable surface 11, producing diffuse reflection at the edges of the clothing to be measured. Unlike pendant or side lighting, the light from the worktable light curtain 33 prevents the openwork structure of the clothing from being illuminated by excessively strong light, thus avoiding the photographic equipment missing or producing poor images of the openwork structure in this situation. Pendant or side lighting, on the other hand, should be used to ensure better image quality. Stronger light intensity serves two purposes: firstly, to clearly illuminate the object being tested; and secondly, to create shadows by illuminating the clothing with an angled light source, similar to the effect of a medical shadowless lamp. Therefore, when using pendant or side light sources, the light intensity is generally stronger, resulting in shadows at the edges of the object being tested. In such cases, the camera tends to produce larger errors in the measurement results. However, the rough edges and threads on the object being tested can be prevented from being recognized by the camera and thus avoid misidentification after being illuminated by the light curtain 33 on the worktable. Furthermore, when the worktable light curtain 33 is in a heated state, the clothing on the worktable is more likely to lie flat and be easily flattened. The time saved is related to the material, thickness, and style of the clothing, but generally, the flattening time for clothing on the worktable is shorter.

[0054] like Figure 3As shown, the worktable 1 also includes a worktable back panel 13 and a worktable shielding plate 14. The worktable back panel 13 and the worktable shielding plate 14 are arranged around the worktable surface 11, and the side facing the worktable surface 11 is a diffuse reflective surface. By setting the worktable back panel 13 and the worktable shielding plate 14, during operation, the light from the light source system 3 shining from all directions onto the parts of the worktable back panel 13 and the worktable shielding plate 14 will be reflected by the diffuse reflective surface of the worktable back panel 13 and the worktable shielding plate 14. The light after diffuse reflection can enhance the light at the bottom of the garment edge, reduce the shadows and black edges at the edge, ensure that the edges of the captured image are clear, and facilitate more accurate measurement during subsequent image processing, reducing measurement errors.

[0055] It also includes a garment shaping device 4 mounted on the workbench 11. The garment shaping device 4 includes a telescopic cylinder 41, a telescopic displacement output end 42, and a flattening component 43. The telescopic cylinder 41 is fixedly installed vertically above the workbench 11. The flattening component 43 is connected to the telescopic cylinder 41 through the telescopic displacement output end 42. When the telescopic displacement output end 42 extends, it drives the flattening component 43 to press against the workbench 11. During operation, the garment is laid flat on the workbench 11. At this time, the edges of the garment may still be uneven. Through the garment shaping device 4, the telescopic cylinder 41 will drive the telescopic displacement output end 42 and the flattening component 43 to extend further. When the flattening component 43 reaches the extended position and contacts the flattened garment, it stops. At this time, the flattening component 43 will press the garment flat against the workbench 11. The edges of the garment are flattened by the flattening component 43. When the garment is photographed at this time, the flatness of the garment edges can further ensure the accuracy of the image signal processing and reduce the problem of errors caused during the shooting process.

[0056] The telescopic cylinder 41 is fixedly connected to the workbench baffle 14, and the bottom of the telescopic cylinder 41 is the space for the telescopic displacement output end 42 to extend and retract. The garment shaping device 4 and the side light source 32 are staggered, so that the light emitted by the side light source 32 can illuminate the workbench surface 11 and be reflected by the workbench baffle 14. During operation, when it is necessary to measure the size of garments with openwork structures, the openwork on the garment, especially the openwork near the edge of the garment, will affect the edge recognition. By staggering the garment shaping device 4 and the side light source 32, the shadows on the edge of the garment can be reduced when the workbench light curtain 33 is not used. After the side light source 32 is turned on, the light emitted by the side light source 32 is reflected by the workbench baffle 14, which can further increase the light intensity illuminating the edge of the garment, achieve a focusing effect, and ensure that the garment with openwork structure edges can also be accurately identified.

[0057] like Figure 4As shown, the visual signal processing system 5 includes: a signal processor 51 connected to a signal receiving unit 52 and a system control unit 54 respectively; a system control unit 54 connected to a signal transmitting unit 53; a signal transmitting unit 53 and a signal receiving unit 52 respectively connected to a visual recognition system 2 for receiving and transmitting signals; a signal transmitting unit 53 sending a detection signal to the visual recognition system 2; a signal receiving unit 52 receiving a visual signal sent by the visual recognition system 2; a signal processor 51 processing the signal received by the signal receiving unit 52; and a system control unit 54 controlling signals, judging detection results, and setting information.

[0058] like Figure 5 As shown, the visual signal processing system 5 processes the visual signal through the following steps:

[0059] a. Set size information;

[0060] The system controller 54 adds, modifies, and saves standard size information, which includes parameters such as style, size, collar width, collar circle, upper shoulder width, lower shoulder width, sleeve length, cuff, chest circumference, garment length, hem, positive tolerance, and negative tolerance. After the operation is completed, the system controller 54 can display a success message and save the standard size information.

[0061] b. Send signal

[0062] The system controller 54 sends a detection signal to the signal transmitting unit 53, and the signal transmitting unit 53 transmits the signal to the visual recognition system 2, which then performs the detection operation.

[0063] c. Signal Processing

[0064] After the visual recognition system 2 completes the detection operation and obtains the visual signal, the signal receiving unit 52 receives the visual signal transmitted by the visual recognition system 2, and the signal processor 51 converts it into size information and image information and sends it to the system control unit 54.

[0065] d. Image display and data comparison

[0066] The system control unit 54 displays image information and size information, compares them with standard size information, obtains comparison results, displays comparison results and provides prompt information, and determines whether the detection is complete. When there is undetected information, the system control unit 54 resends the undetected detection signal to the signal transmitting unit 53 and displays prompt information. The system control unit 54 can send signals once or multiple times until the detection is complete.

[0067] The processing steps of the visual signal processing system 5 are as follows:

[0068] Step a also includes: setting image reference points;

[0069] When the system control unit 54 acquires the detection image for the first time, the signal processor 51 converts the signal acquired by the signal receiving unit 52 into image information and sends it to the system control unit 54. The system control unit 54 then sets the image detection reference point as the detection point of the garment to be inspected. When setting the detection reference point, one or more detection reference points can be set. When setting, the style and size parameters in the standard size information need to be selected to locate the standard size information corresponding to the set image.

[0070] The processing steps of the visual signal processing system 5 are as follows:

[0071] In step a, an image reference point is set, with X and Y as the horizontal and vertical coordinates of the object to be measured, and Z as the height coordinate of the object. When measuring the X and Y coordinates, the Z coordinate of the image reference point, set in step a, does not change with the measurement. By using the Z-axis coordinate of the detection point as a constant Z coordinate, it is prevented that the camera will repeatedly focus during measurement due to uneven clothing, which would affect the processing speed. At the same time, reducing the number of zooms can reduce the adjustment of the lens, reduce errors, reduce the chance of the lens falling, and extend the life of the lens.

[0072] The processing steps of the visual signal processing system 5 are as follows: After setting the Z coordinate of the image reference point, the lens does not focus to ensure that the Z-axis coordinate is constant. During detection, the same height coordinate Z is used for measurement. When changing clothing for detection or the same clothing is detected multiple times, the clarity and accuracy of image acquisition are guaranteed, and the adjustment of the lens is reduced.

[0073] Another processing step of the visual signal processing system 5: After the Z coordinate of the image reference point is set, the lens zooms, and the Z coordinate value does not change with the lens zoom, ensuring that the Z-axis coordinate is constant, which guarantees the accuracy of image acquisition and detection data and reduces the adjustment of the lens.

[0074] The processing steps of the visual signal processing system 5 also include:

[0075] e. Delete size information

[0076] The system control unit 54 deletes added standard dimension information. The deletion operation can be performed on one or more standard dimension information parameters. The system control unit 54 saves the operation result and provides a prompt message. The deletion operation can reduce redundant data, reduce errors caused by manual operation, avoid tedious operations due to excessive data, improve work efficiency, and increase the operating speed of the system control unit 54.

[0077] The processing steps of the visual signal processing system 5 also include:

[0078] f. Rollback operation

[0079] The system control unit 54 deletes the measured information, rolls back to the specified step, and resends the detection signal to the signal transmission unit 53. The rollback step can be to delete the previous detection data or to re-detect the data after deleting multiple times. The rollback operation can improve work efficiency, reduce erroneous data, and avoid inaccurate detection data caused by uneven clothing during measurement, while also avoiding the generation of redundant test results.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic measurement device for finished garment dimensions, characterized in that it include: The system comprises a workbench (1), a visual recognition system (2), a light source system (3), and a visual signal processing system (5). The workbench (1) has at least one flat work surface (11), and a top support mechanism (12) is provided vertically above the work surface (11). The light source system (3) and the visual recognition system (2) are mounted above the workbench via the top support mechanism (12), and the illumination direction of the visual recognition system (2) and the light source system (3) is directed toward the work surface (11). The visual recognition system (2) and the visual signal processing system (5) are connected together. The system (5) is connected to the light source system (3), which includes a main vertical light source (31) and / or a side light source (32) facing the workbench (11), and a workbench light curtain (33). The main vertical light source (31) is fixedly installed on the top support mechanism (12) of the workbench. The side light source (32) is set at an angle to the irradiation direction of the main vertical light source (31), and the side light source (32) is fixedly installed on the top support mechanism (12) of the workbench and / or the workbench (11). The workbench light curtain (33) is installed on the workbench (11). The visual signal processing system (5) includes: a signal processor (51) connected to a signal receiving unit (52) and a system control unit (54) respectively; the system control unit (54) connected to a signal transmitting unit (53); the signal transmitting unit (53) and the signal receiving unit (52) respectively connected to the visual recognition system (2) for receiving and transmitting signals; the signal processor (51) for processing the signals received by the signal receiving unit (52); and the system control unit (54) for controlling signals, judging detection results, and setting information. The visual signal processing system (5) processes visual signals through the following steps: a. Set size information, set image reference point. The system control unit (54) adds, modifies and saves standard size information. When the system control unit (54) first acquires the detection image, it sets the image detection reference point as the detection point of the garment to be detected. The image reference point is set with X and Y as the horizontal and vertical coordinates of the object to be measured and Z as the height coordinate of the object to be measured. When measuring the X and Y coordinates, the Z coordinate of the image reference point does not change with the measurement after being set in step a. The lens does not focus after the Z coordinate of the image reference point is set. b. Send signal The system control unit (54) sends a detection signal to the signal transmission unit (53), and the signal transmission unit (53) transmits the signal to the visual recognition system (2); c. Signal Processing The signal receiving unit (52) receives the visual signals transmitted by the visual recognition system (2), and the signal processor (51) converts them into size information and image information and sends them to the system control unit (54); d. Image display and data comparison The system control unit (54) displays image information and size information, compares them with standard size information, obtains comparison results, and determines whether the detection is completed. It then resends the undetected detection signals to the signal transmission unit (53) until the detection is completed.

2. The automatic garment size measuring device according to claim 1, characterized in that, The visual recognition system (2) includes an industrial camera (21), a lens (22) and a mounting ring (23). The industrial camera (21) is mounted on a support mechanism (12) on the top of the workbench, and the shooting area of ​​the industrial camera (21) is set facing the workbench surface (11). The lens (22) is mounted on the industrial camera (21) through the mounting ring (23).

3. The automatic garment size measuring device according to claim 2, characterized in that, The visual recognition system (2) also includes a locking device (24) mounted on the lens (22).

4. The automatic garment size measuring device according to claim 1, characterized in that, The workbench (1) also includes a workbench back plate (13) and a workbench shield (14), which are arranged around the workbench surface (11) and the side facing the workbench surface (11) is a diffuse reflective surface.

5. The automatic garment size measuring device according to claim 1, characterized in that, It also includes a garment shaping device (4) set on the workbench (11). The garment shaping device (4) includes a telescopic cylinder (41), a telescopic displacement output end (42), and a flattening component (43). The telescopic cylinder (41) is fixedly installed vertically above the workbench (11). The flattening component (43) is connected to the telescopic cylinder (41) through the telescopic displacement output end (42). When the telescopic displacement output end (42) extends, it drives the flattening component (43) to press against the workbench (11).

6. The automatic garment size measuring device according to claim 5, characterized in that, The telescopic cylinder (41) is fixedly connected to the workbench baffle (14), and the bottom of the telescopic cylinder (41) is the space for the telescopic displacement output end (42) to extend and retract. The garment shaping device (4) and the side light source (32) are arranged alternately so that the light emitted by the side light source (32) can illuminate the workbench surface (11) and be reflected by the workbench baffle (14).

7. The automatic garment size measuring device according to claim 1, characterized in that, The processing steps of the visual signal processing system (5) are as follows: after the Z coordinate of the image reference point is set, the lens zooms, and the Z coordinate value does not change with the lens zoom.

8. The automatic garment size measuring device according to claim 1, characterized in that, The processing steps of the visual signal processing system (5) also include: e. Delete size information The system control unit (54) deletes the added dimension information.

9. The automatic garment size measuring device according to claim 1, characterized in that, The processing steps of the visual signal processing system (5) also include: f. Rollback operation The system control unit (54) deletes the measured information, reverts to the specified step, and resends the detection signal.

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