Fabric style dynamic video acquisition device at set wind speed

Abstract

The utility model discloses a fabric style dynamic video acquisition device at a set wind speed, which comprises a shading black box body, a fabric conveying inlet and outlet is arranged above the shading black box body, and a turnover cover capable of being opened and closed is arranged on the fabric conveying inlet and outlet; the fabric sample fixing device comprises a fabric height lifting support and a fabric clamping device connected with the fabric height lifting support, and the fabric height lifting support and the fabric clamping device can extend out of the fabric conveying inlet and outlet; the wind speed dynamic simulation device comprises a vertical plate, three constant-speed fans are mounted on the vertical plate, the acquisition device comprises a camera angle adjusting fixing support and a light supplementing system which are mounted on the vertical plate, a spherical rotating shaft is connected to the camera angle adjusting fixing support, a miniature wide-angle camera is rotatably connected to the spherical rotating shaft, and the miniature wide-angle camera is connected to the camera angle adjusting fixing support. The light supplementing system comprises four LED lamp strips which are installed on the four edges of the inner side face of the vertical plate respectively. The fabric processing device has the technical advantages of being capable of collecting styles and expressions of the fabric at different angles and wind speeds and the like.

Description

Technical Field

[0001] The utility model relates to a video acquisition device, and more specifically, to a dynamic video acquisition device for fabric styles under set wind speeds, belonging to the field of fabric style visual detection. Background Art

[0002] Human senses comprehensively evaluate the physical and mechanical properties of fabrics, forming a perceptual understanding and perception of fabric style. Fabric style can be broadly categorized into visual, tactile, and auditory styles. Vision is a key sensory system for humans to understand the properties of external objects, effectively understanding the visual attributes of fabrics such as softness, flow, and drape. Different fabrics have varying performance indicators. Traditional style evaluation methods primarily assess fabric bending, drape, wrinkle, and softness based on standards such as GB / T 18318.1-2009, GB / T8942-2016, AATCC 202-2014, and ZFB 003-2019. Instrumental evaluation of these various fabric properties provides a reference for fabric style evaluation. Image analysis of fabric video silhouettes can effectively and accurately distinguish the characteristics of different fabrics. Currently, with the vast number of clothing, apparel, and home textile products available on e-commerce platforms, suppliers and end consumers urgently need to understand the visual characteristics of fabrics to accurately assess product performance and usage scenarios.

[0003] Most domestic and international style meters evaluate various style indicators by converting the force transmitted by the fabric's contact with the instrument into various data points, performing calculations, and obtaining the results of various indicators. In recent years, research and instruments based on machine vision methods for assessing fabric drape properties have gradually increased. Castillo et al. proposed segmenting dynamic fabric videos to generate contour videos of the fabric in motion, constructing these videos in 3D, and observing the dynamic changes in the fabric's shape and texture during movement. They extracted the following features: marginal statistics, serial correlation, amplitude, and phase correlation, and performed PCA and weighted linear regression to predict fabric stiffness and area weight.

[0004] However, the above-mentioned existing technical solutions have the following drawbacks: 1. The results are inaccurate, irreproducible, and unstable; 2. The instrumentation is complex to use, and when simulating a person's subjective perception of fabric, the machine may have slight deviations, resulting in unclear individual indicators, such as the softness assessment standard; 3. When converting the force transmitted by the fabric into electrical energy for calculation, some deviations may also be caused by factors such as friction. 4. The wind speed and light conditions are not clear, and the experimental environment is large, which may be affected by uncertain factors such as the environment. Utility Model Content

[0005] The utility model aims to provide a dynamic video acquisition device for fabric style at a set wind speed, which has the technical characteristics of being able to capture the style performance of fabric at different angles and wind speeds.

[0006] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0007] The utility model provides a dynamic video acquisition device for fabric style under set wind speed, comprising a wind speed dynamic simulation device, an acquisition device, and a fabric sample fixing device;

[0008] The light-shielding black box body is provided with a window on the right side of the light-shielding black box body, the window including a glass layer and a light-shielding plate, a fabric delivery entrance and exit is provided above the light-shielding black box body, and the fabric delivery entrance and exit is provided with a flip cover that can be opened and closed;

[0009] The fabric sample fixing device includes a fabric height lifting bracket and a fabric clamping device connected to the fabric height lifting bracket. The fabric sample fixing device is located in a light-shielding black box, and the fabric height lifting bracket and the fabric clamping device can extend out of the fabric delivery entrance and exit.

[0010] The wind speed dynamic simulation device includes a vertical plate that can be installed at the upper end of a light-shielding black box, three constant-speed fans are installed on the vertical plate, the acquisition device includes a camera angle adjustment fixing bracket and a fill light system installed on the vertical plate, the camera angle adjustment fixing bracket is connected to a spherical rotating shaft driven by a motor, a miniature wide-angle camera is rotatably connected to the spherical rotating shaft, and the fill light system includes four LED light strips, and the four LED light strips are respectively installed on the four sides of the inner side of the vertical plate.

[0011] Preferably, the fabric height lifting bracket includes a gear rack transmission device, a transmission column, and a guide rail. The gear rack transmission device includes a shell, an electrically driven gear is provided on the shell, and a rack is vertically provided along the transmission column. The gear is engaged with the rack of the transmission column, and a guide rail is provided outside the shell. The transmission column can be slid on the guide rail, and the transmission column is driven up and down by the forward and reverse rotation of the gear.

[0012] Preferably, the fabric clamping device includes two connecting rods, the left ends of the two connecting rods are hinged by hinges, magnets are connected to the inner sides of the two connecting rods, and the right end of one of the connecting rods is connected to a ring-shaped buckle to perform secondary fixation on the two connecting rods.

[0013] Preferably, two flaps driven by a No. 2 motor are provided at the fabric delivery entrance and exit, and the No. 2 motor drives the flaps to open or close to realize opening or closing of the fabric delivery entrance and exit.

[0014] Preferably, the constant-speed fan includes a fan blade and a No. 1 motor for driving the fan blade to rotate.

[0015] Preferably, the magnet is provided with scale marks to achieve control over the restoration of the same scene position of different fabrics.

[0016] Preferably, a controller is provided in the light-shielding black box, and a control screen with a switch button is provided on the front end of the light-shielding black box. The control screen, the miniature wide-angle camera and each motor are electrically connected to the controller.

[0017] Preferably, there are four camera angle adjustment fixing brackets, each corresponding to a miniature wide-angle camera.

[0018] Beneficial effects: It has the technical characteristics of simple structure, small size, small space occupation, strong practicality, and the ability to collect the style performance of fabrics at different angles and wind speeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural diagram of the scene simulation test device of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the scene simulation test device of the present invention from a top view.

[0021] Figure 3 This is a schematic diagram of the fabric position control device of the present invention.

[0022] Figure 4 This is one of the physical schematic diagrams of the present utility model.

[0023] Figure 5 This is the second physical schematic diagram of the present utility model. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0025] like Figure 1-5The figure shows a specific embodiment of a device for capturing dynamic video of fabric style under a set wind speed. The embodiment is a device for capturing dynamic video of fabric style under a set wind speed, comprising a wind speed dynamic simulation device, a capturing device, and a fabric sample fixing device; further comprising a light-shielding black box 12, a window being arranged on the right side of the light-shielding black box 12, the window comprising a glass layer 13 and a light-shielding plate 14, a fabric delivery entrance and exit 17 being provided above the light-shielding black box 12, and a flap 22 which can be opened and closed being provided on the fabric delivery entrance and exit 17; the fabric sample fixing device comprising a fabric height lifting bracket 7 and a fabric clamping device 8 connected to the fabric height lifting bracket 7, the fabric The material sample fixing device is located in the light-shielding black box 12, and the fabric height lifting bracket 7 and the fabric clamping device 8 can extend out of the fabric conveying entrance and exit 17; the wind speed dynamic simulation device includes a vertical plate that can be installed at the upper end of the light-shielding black box 12, and three constant-speed fans 1 are installed on the vertical plate. The collection device includes a camera angle adjustment fixing bracket and a fill light system installed on the vertical plate. The camera angle adjustment fixing bracket is connected to a spherical shaft 5 driven by a motor, and a miniature wide-angle camera 4 is rotatably connected to the spherical shaft 5. The fill light system includes four LED light strips 6, and the four LED light strips 6 are respectively installed on the four sides of the inner side of the vertical plate.

[0026] A specific embodiment: a light-shielding black box 12 with a size of 100×80×60 cm and a thickness of 3 cm, referred to as the box, is set to minimize the use of the experimental space and avoid the influence of external factors such as wind speed and light on the fabric style test results; three fixed-speed fans 1 are equipped to adjust the wind speed in three gears respectively, so as to simulate the movement of fabrics under different wind directions and different wind speeds, thereby improving the accuracy of the experiment and simulating human visual perception at different angles; four groups of LED light strips 6 are distributed in the four corners of the box, which improve the overall visibility of the fabric while effectively avoiding relative The machine is exposed to strong light and can avoid focusing errors and exposure issues, thereby improving the accuracy and reliability of fabric motion state sample collection. Four miniature wide-angle cameras 4 are installed, and each camera can be controlled through a control screen 18 to achieve real-time angle adjustment, more accurately capturing the fabric's motion form on all four sides, simulating human visual initiative for focused observation. A scale is added to the magnetic fabric clamping device to facilitate fabric positioning and control variables during comparative analysis experiments. A hinge connects to the magnet 9, and a buckle 11 secures the clamping device for secondary fixation, enhancing fabric position stability while also preventing the impact of reflections from the clamping device on the image. The experimental control screen, based on information technology control technology, allows for manual intervention in fabric placement and lifting, speed control of the fixed-speed fan 1, brightness adjustment of the LED light strip 6, and angle control of the miniature wide-angle camera 4, better aligning with human subjective experimental design and providing convenient and easy operation. A Bluetooth camera connection system can also be set up for secondary processing of captured videos or images, completing frame extraction, denoising, segmentation, hole filling, and geometric feature extraction and analysis based on image processing technology, enabling real-time transmission and analysis of results during the experiment, improving accuracy and efficiency. A visual window is provided to facilitate determination of the fabric position, and a switch button 19 is provided to realize power switch, start, and emergency stop buttons.

[0027] In a preferred embodiment, the fabric height lifting bracket 7 includes a gear rack transmission device 16, a transmission column 15, and a guide rail 20. The gear rack transmission device 16 includes a shell, an electrically driven gear is provided on the shell, and a rack is vertically provided along the transmission column 15. The gear is engaged with the rack of the transmission column 15. A guide rail is provided outside the shell, and the transmission column 15 can be slidably located on the guide rail 20, and the transmission column 15 is driven up and down by the forward and reverse rotation of the gear.

[0028] In a preferred embodiment, the fabric clamping device 8 includes two connecting rods, the left ends of the two connecting rods are hinged by a hinge 10, magnets 9 are connected to the inner sides of the two connecting rods, and the right end of one of the connecting rods is connected to a ring-shaped buckle 11 for secondary fixation of the two connecting rods.

[0029] In a preferred embodiment, two flaps 22 driven by a second motor 21 are provided at the fabric delivery entrance and exit 17 , and the second motor 21 drives the flaps 22 to open or close to realize opening or closing of the fabric delivery entrance and exit 17 .

[0030] In a preferred embodiment, the constant-speed fan 1 includes a fan blade 2 and a No. 1 motor 3 for driving the fan blade 2 to rotate.

[0031] In a preferred embodiment, the magnet 9 is provided with scale marks to achieve control of restoring the same scene position of different fabrics.

[0032] In a preferred embodiment, a controller is provided in the light-shielding black box 12, and a control screen 18 with a switch button 19 is provided on the front end of the light-shielding black box 12. The control screen 18, the miniature wide-angle camera 4 and each motor are electrically connected to the controller.

[0033] In a preferred embodiment, four camera angle adjustment fixing brackets are provided, each corresponding to a miniature wide-angle camera 4 .

[0034] The scene simulation test device includes four miniature wide-angle cameras 4, four sets of LED light strips 6, and three constant-speed fans 1. The miniature wide-angle cameras 4 are provided with a spherical shaft 5 on the outside, and the spherical shaft 5 is connected to an external drive device and can be debugged through the control screen 18; the LED light strips 6 are connected to an external drive device and can be debugged through the control screen 18; the constant-speed fan 1 consists of a fan blade 2 and a No. 1 motor 3. The No. 1 motor 3 is connected to the external drive device, receives information instructions to drive the fan blade 2 to rotate, and performs dynamic environment simulation. The fabric position control device includes a fabric height lifting bracket 7 and a fabric clamping device 8. The height lifting bracket 7 has an external transmission column 15. The transmission column 15 acts on the gear rack transmission device 16 and the guide rail 20. The external driving device controls the gear rack transmission device 16. The gear rack transmission device 16 drives the mechanical transmission column 15 to perform positioning movement on the guide rail 20. The main body of the fabric clamping device 8 is two magnets 9, one end of which is connected to the workpiece through a hinge 10 for rotating shaft movement, and the other end is equipped with a buckle 11 to fix the magnet 9 for secondary fixation. At the same time, the above-mentioned main devices are all located inside the same light-shielding black box 12. A fabric delivery entrance and exit 17 is set above the light-shielding black box 12. The fabric delivery entrance and exit 17 consists of a flip cover 22 and a No. 2 motor 21 that controls the flip cover. The external drive device receives instructions from the control screen 18 to drive the No. 2 motor 21. The No. 2 motor 21 drives the flip cover 22 to open and close the entrance and exit. The light-shielding black box 12 is equipped with a control screen 18 and a switch button 19 in front. Single-click to start and shut down the control screen 18. An observation window is set on the right side. The window consists of a glass layer 13 and a light shielding plate 14. When necessary, the light shielding plate 14 can be pulled open to observe the internal experiment in real time for visual adjustment.

[0035] After taking photos or videos, they can be transferred to a computer via Bluetooth connection, and the fabric dynamics can be transformed into digital images that can be used for computer analysis and processing. First, use Python to write frame extraction code to collect interval frames of the sample image, and then perform unified denoising and segmentation on the image. Finally, through the algorithm, the geometric and shape features of the sample image are extracted, and through data normalization and data visualization, the features with low discrimination are removed in combination with the degree of data discreteness, and effective features are extracted. The dynamic style of the fabric is rated in the form of feature combination.

[0036] Finally, it should be noted that the present invention is not limited to the above embodiments and may be subject to many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art should be considered to be within the scope of protection of the present invention.

Claims

1. A device for capturing dynamic video of fabric styles at a set wind speed, characterized by: It includes a wind speed dynamic simulation device, a collection device, and a fabric sample fixing device; It also includes a light-shielding black box (12), a window is provided on the right side of the light-shielding black box (12), the window includes a glass layer (13) and a light-shielding plate (14), a fabric delivery entrance and exit (17) is provided above the light-shielding black box (12), and a flap (22) that can be opened and closed is provided on the fabric delivery entrance and exit (17); The fabric sample fixing device comprises a fabric height lifting bracket (7) and a fabric clamping device (8) connected to the fabric height lifting bracket (7); the fabric sample fixing device is located in a light-shielding black box (12), and the fabric height lifting bracket (7) and the fabric clamping device (8) can extend outside a fabric transport entrance (17); The wind speed dynamic simulation device comprises a vertical plate that can be installed at the upper end of a light-shielding black box (12), three constant-speed fans (1) are installed on the vertical plate, the acquisition device comprises a camera angle adjustment fixing bracket and a fill light system installed on the vertical plate, the camera angle adjustment fixing bracket is connected to a spherical shaft (5) driven by a motor, a miniature wide-angle camera (4) is rotatably connected to the spherical shaft (5), and the fill light system comprises four LED light strips (6), and the four LED light strips (6) are respectively installed on the four sides of the inner side of the vertical plate.

2. The device for capturing dynamic video of fabric style under a set wind speed according to claim 1, characterized in that: The fabric height lifting bracket (7) comprises a gear rack transmission device (16), a transmission column (15), and a guide rail (20). The gear rack transmission device (16) comprises a housing, an electrically driven gear is provided on the housing, a rack is vertically provided along the transmission column (15), the gear is meshed with the rack of the transmission column (15), a guide rail is provided outside the housing, the transmission column (15) can be slidably located on the guide rail (20), and the transmission column (15) is driven to move up and down by the positive and negative rotation of the gear.

3. The device for capturing dynamic video of fabric style under a set wind speed according to claim 1 or 2, characterized in that: The fabric clamping device (8) comprises two connecting rods, the left ends of the two connecting rods are hinged by a hinge (10), the inner sides of the two connecting rods are connected with magnets (9), and the right end of one of the connecting rods is connected with an annular buckle (11) for secondary fixing of the two connecting rods.

4. The device for capturing dynamic video of fabric style at a set wind speed according to claim 1, characterized in that: The fabric delivery entrance (17) is provided with two flaps (22) driven by a second motor (21). The second motor (21) drives the flaps (22) to open or close to realize opening or closing of the fabric delivery entrance (17).

5. The device for capturing dynamic video of fabric style at a set wind speed according to claim 4, characterized in that: The fixed-speed fan (1) comprises a fan blade (2) and a first motor (3) for driving the fan blade (2) to rotate.

6. The device for capturing dynamic video of fabric style under a set wind speed according to claim 3, characterized in that: The magnet (9) is provided with scale marks to achieve control over the restoration of the same scene position of different fabrics.

7. The device for capturing dynamic video of fabric style at a set wind speed according to claim 5, characterized in that: A controller is provided in the light-shielding black box (12), and a control screen (18) with a switch button (19) is provided on the front face of the light-shielding black box (12). The control screen (18), the miniature wide-angle camera (4) and each motor are electrically connected to the controller.

8. The device for capturing dynamic video of fabric style at a set wind speed according to claim 1 or 7, characterized in that: The camera angle adjustment fixing brackets are provided with four, each corresponding to a miniature wide-angle camera (4).

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