Closed tobacco leaf image acquisition device

Abstract

The invention discloses a closed tobacco leaf image acquisition device, and relates to the technical field of image scanning. Comprising a handle, a box body, a box cover, a tobacco leaf sample, a platform glass plate, a reflector and a scanner, the scanner comprises a scanning head, a stepping motor and a buffer. Firstly, the handle is held to lift the box cover, a tobacco leaf sample is placed on the platform glass plate, and the box cover is covered to form a closed space; scanning is started, when the scanner scans tobacco leaves, a scanning head is driven by a stepping motor to move in the Y-axis direction, in the process, the scanning head continuously emits light rays and receives light rays reflected back from the surface of a tobacco leaf sample through a reflecting mirror, and therefore image data of each row of the tobacco leaves are obtained, and the process is continuously carried out; the whole tobacco leaf sample is completely scanned. According to the invention, a closed scanning environment is adopted, so that image acquisition errors caused by light are reduced.

Description

Technical Field

[0001] The present invention relates to the field of image scanning technology, and more particularly to a closed tobacco leaf image acquisition device. Background Art

[0002] With the continuous development of the tobacco industry, the requirements for tobacco leaf quality control are becoming increasingly higher. As one of the important means of tobacco leaf quality control, tobacco leaf image acquisition technology has received extensive attention and development in recent years. Through image acquisition technology, the appearance characteristics of tobacco leaves can be quickly and accurately detected, providing an important basis for tobacco leaf grading and quality evaluation.

[0003] At present, tobacco leaf image acquisition technology has been widely used in many fields of the tobacco industry. For example, in the process of tobacco leaf grading, the color, texture, shape and other characteristics of tobacco leaves can be quickly identified through image acquisition technology, and graded according to preset standards. In addition, image acquisition technology also plays an important role in tobacco leaf quality monitoring and warehouse management. With the continuous maturity of technology and the reduction of costs, the application scope of tobacco leaf image acquisition technology will be further expanded.

[0004] During the tobacco leaf image acquisition process, different equipment, different viewing angles, and different lighting conditions will have a significant impact on the quality of the acquired images. This is particularly serious during technical training and teaching, technical exchanges, quality reporting, and guiding tobacco farmers to carry out standardized production:

[0005] 1. Impact of different devices

[0006] 1. Image sensor and resolution:

[0007] High-resolution image sensors can capture more details, making images clearer. In tobacco leaf image acquisition, this helps to more accurately display the texture, color and other characteristics of tobacco leaves.

[0008] Cameras of different brands and models may differ in image processing algorithms, color reproduction capabilities, etc., which will also affect the quality of the final image.

[0009] 2. Lens performance:

[0010] The optical performance of the lens is crucial to image quality. A high-quality lens can reduce distortion and improve image sharpness and contrast.

[0011] The focal length and aperture size of the lens will also affect the depth of field and exposure of the image, and need to be adjusted according to specific acquisition requirements.

[0012] 3. Stability and reliability:

[0013] In the actual acquisition process, the stability and reliability of the equipment are also factors that need to be considered. Stable equipment can reduce the blur caused by shaking and improve the clarity of the image.

[0014] 2. The impact of different perspectives

[0015] 1. Perspective selection:

[0016] Different viewing angles can show different characteristics of tobacco leaves. For example, the front view can clearly show the whole picture and overall shape of the tobacco leaves; the side view helps to observe the thickness and edge shape of the tobacco leaves.

[0017] When choosing a perspective, you need to flexibly adjust it according to specific display needs in order to better convey the required information.

[0018] 2. Projection deformation:

[0019] At different viewing angles, tobacco leaves may produce different degrees of projection deformation, which requires image correction technology to eliminate or reduce its impact to ensure the accuracy and authenticity of the image.

[0020] 3. The impact of different lighting conditions

[0021] 1. Light intensity:

[0022] Light intensity directly affects the brightness and contrast of the image. Too strong or too weak light may lead to image quality degradation, such as overexposure or underexposure. In tobacco leaf image acquisition, it is necessary to select the appropriate light intensity to ensure the clarity and detail of the image.

[0023] According to relevant research and practical experience, collecting tobacco leaves from the front side under a white light source with a light intensity of 90lux is most conducive to grading, and the recognition accuracy and efficiency are both high.

[0024] 2. Light uniformity:

[0025] The uniformity of illumination is also important for image quality. Uneven illumination will cause shadows or highlights in the image, affecting the visual effect of the tobacco leaves and subsequent analysis. Therefore, it is necessary to ensure the uniformity of illumination during the acquisition process, and auxiliary tools such as diffuse reflectors can be used to improve the lighting conditions if necessary.

[0026] 3. Light source type and color:

[0027] Different types of light sources (such as natural light, LED lights, fluorescent lights, etc.) and the colors of light sources (such as white, red, blue, etc.) will also affect the image quality. In tobacco leaf image acquisition, it is necessary to select the appropriate light source type and color according to the specific acquisition requirements and environmental conditions.

[0028] Due to the existence of the above problems, we invented a closed image acquisition device to collect tobacco leaf images to provide more intuitive and clear physical samples or image data for technical training and teaching, technical exchanges, quality situation reports, and guidance for tobacco farmers to carry out standardized production.

[0029] Therefore, it is an urgent problem for those skilled in the art to propose a closed tobacco leaf image acquisition device to solve the difficulties existing in the prior art. Summary of the invention

[0030] In view of this, the present invention provides a closed tobacco leaf image acquisition device for solving the technical problems existing in the prior art.

[0031] In order to achieve the above object, the present invention provides the following technical solutions:

[0032] A closed tobacco leaf image acquisition device comprises: a handle, a box body, a box cover, a tobacco leaf sample, a platform glass plate, a reflector, and a scanner; wherein the scanner comprises: a scanning head, a stepping motor, and a buffer;

[0033] First, hold the handle to lift the box cover, place the tobacco leaf sample on the platform glass plate, and close the box cover to form a closed space; turn on the scan. When scanning the tobacco leaf, the scanner moves along the Y-axis direction through the scanning head driven by the stepper motor. During this process, the scanning head continuously emits light and receives light reflected from the surface of the tobacco leaf sample through the reflector, thereby obtaining image data for each row of the tobacco leaf. This process continues until the entire tobacco leaf sample is completely scanned.

[0034] Optionally, the scanning head includes a light source, a lens and a sensor; the light source continuously emits light to illuminate the tobacco leaf sample, the light reflected from the surface of the tobacco leaf sample is reflected by a reflector, and then focused by the lens to form an optical image to the sensor, which receives and converts it into an electrical signal.

[0035] Optionally, it also includes: a data conversion output processing module, which is received by the sensor and converted into an electrical signal and sent to the data conversion output processing module, so as to obtain image data of each row of tobacco leaves.

[0036] Optionally, the sensor is a CCD charge coupled device or a CMOS complementary metal oxide semiconductor.

[0037] Optionally, during the scanning process, the obtained image data is temporarily stored in a buffer.

[0038] Optionally, after scanning is completed, the image data stored in the buffer will be transferred to the computer in sequence through the USB interface.

[0039] Optionally, the image data transferred to the computer is stored in a hard disk or other storage media.

[0040] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a closed tobacco leaf image acquisition device, which has the following beneficial effects:

[0041] 1) Through the coordinated work of the scanning head, stepper motor, buffer, and data transmission and storage system, the tobacco leaf image can be accurately scanned and efficiently stored. This process not only improves the efficiency and accuracy of tobacco leaf quality control, but also provides strong support for the intelligent and automated development of the tobacco industry;

[0042] 2) A closed scanning environment is used to reduce image acquisition errors caused by light. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0044] Figure 1 A structural diagram of a closed tobacco leaf image acquisition device provided by the present invention;

[0045] Among them, 1-handle, 2-box cover, 3-tobacco leaf sample, 4-platform glass plate, 5-light source, 6-reflector, 7-lens, 8-sensor, 9-data conversion output processing module, 10-box body. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 As shown, the present invention discloses a closed tobacco leaf image acquisition device, comprising: a handle 1, a box body 10, a box cover 2, a tobacco leaf sample 3, a platform glass plate 4, a reflector 6, and a scanner; wherein the scanner comprises: a scanning head, a stepping motor, and a buffer;

[0048] First, hold the handle 1 to lift the box cover 2, place the tobacco leaf sample 3 on the platform glass plate 4, and close the box cover 2 to form a closed space; turn on the scan, and when the scanner scans the tobacco leaves, the scanning head is driven by the stepper motor and moves along the Y-axis direction (i.e., the lateral direction of the tobacco leaf sample). During this process, the scanning head continuously emits light and receives light reflected from the surface of the tobacco leaf sample through the reflector 6, thereby obtaining image data of each row of the tobacco leaf. This process continues until the entire tobacco leaf sample 3 is completely scanned.

[0049] Specifically, the stepper motor is used to drive the scanning head to move along the Y-axis direction, ensuring that the scanning head can accurately scan each row of the tobacco leaf sample. The stepper motor plays a vital role in the scanner with its precise control ability and stable operation characteristics.

[0050] Furthermore, the scanning head includes a light source 5, a lens 7 and a sensor 8; the light source 5 continuously emits light to illuminate the tobacco leaf sample 3, and the light reflected from the surface of the tobacco leaf sample 3 is reflected by the reflector 6, and then focused by the lens 7 to form an optical image given to the sensor 8, which receives and converts it into an electrical signal.

[0051] Specifically, the light source 5 is a movable lamp tube.

[0052] Furthermore, it also includes: a data conversion output processing module 9, the sensor 8 receives and converts the electrical signal into the electrical signal and sends it to the data conversion output processing module 9, so as to obtain the image data of each row of tobacco leaves.

[0053] Furthermore, the sensor 8 is a CCD charge coupled device or a CMOS complementary metal oxide semiconductor.

[0054] Specifically, they can efficiently convert optical images into electrical signals for subsequent processing.

[0055] Furthermore, during the scanning process, the obtained image data is temporarily stored in a buffer.

[0056] Specifically, the buffer acts as a temporary storage area to ensure that image data is not lost or damaged before being transmitted to the computer.

[0057] Furthermore, after scanning is completed, the image data stored in the buffer will be transmitted to the computer in sequence through the USB interface.

[0058] Specifically, the USB interface plays an important role in data transmission between the scanner and the computer with its high-speed and stable data transmission characteristics.

[0059] During the data transmission process, the scanner driver is responsible for converting the image data into a format that the computer can recognize and ensuring the integrity and accuracy of the data.

[0060] Furthermore, the image data transmitted to the computer is stored in a hard disk or other storage media.

[0061] Specifically, the image data transmitted to the computer is stored in a hard disk or other storage medium, and according to requirements, the image data can be used for subsequent analysis, processing or archiving.

[0062] In a specific embodiment:

[0063] The scanning process is explained in detail using the Changde-Yunyan 87-01-1 duplication and the Changde-Yunyan 87-01-2 duplication:

[0064] Scan preparation stage:

[0065] 1. Turn on the device: First, open the scanner cover 2 by operating the handle 1 to place the tobacco leaves to be scanned;

[0066] 2. Place the tobacco leaves: Carefully place the specific numbered Changde-Yunyan 87-01-1 duplicate and Changde-Yunyan 87-01-2 duplicate tobacco leaves on the platform glass plate 4 inside the scanner. This step requires ensuring that the tobacco leaves are flat and wrinkle-free for subsequent scanning.

[0067] 3. Close the box cover: After placing the tobacco leaves, close the box cover 2 quickly and accurately to avoid the influence of external light or dust on the scanning quality during the scanning process.

[0068] Scan execution phase:

[0069] 1. Start scanning: Start the scanning program through the connected computer software. Once started, the control system inside the scanner will be automatically activated.

[0070] 2. Stepper motor drive: It drives the scanning head to move precisely along the Y-axis (i.e. the horizontal direction of the tobacco leaf).

[0071] 3. Light emission and reception: During the scanning process, the scanner emits light, which hits the surface of the tobacco leaf and generates reflections. The highly sensitive sensor in the scanner is responsible for receiving these reflected lights and converting them into electrical signals.

[0072] 4. Image capture: By continuously emitting and receiving light, the scanning head can capture image data of the tobacco leaf surface line by line, including various details such as color, texture, shape, etc., for subsequent analysis and evaluation.

[0073] 5. Complete scan: This process will continue until the scanning head completes the horizontal scan of the entire tobacco leaf to obtain three-dimensional image data.

[0074] Subsequent processing stage:

[0075] 1. Data transmission: After scanning, the acquired image data will be transmitted to the computer via wireless network.

[0076] 2. Data storage: Store the analysis results in the database.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A closed tobacco leaf image acquisition device, characterized in that: include: Handle, box body, box cover, tobacco leaf sample, platform glass plate, reflector, scanner; wherein the scanner includes: scanning head, stepping motor, buffer; First, hold the handle to lift the box cover, place the tobacco leaf sample on the platform glass plate, and close the box cover to form a closed space; turn on the scan. When the scanner scans the tobacco leaf, the scanning head moves along the Y-axis direction driven by the stepper motor. During this process, the scanning head continuously emits light and receives light reflected from the surface of the tobacco leaf sample through the reflector, thereby obtaining image data for each row of the tobacco leaf. This process continues until the entire tobacco leaf sample is completely scanned.

2. The closed tobacco leaf image acquisition device according to claim 1, characterized in that: The scanning head includes a light source, a lens and a sensor; the light source continuously emits light to illuminate the tobacco leaf sample, the light reflected from the surface of the tobacco leaf sample is reflected by the reflector, and then focused by the lens to form an optical image given to the sensor, which receives and converts it into an electrical signal.

3. The closed tobacco leaf image acquisition device according to claim 1, characterized in that: Also includes: The sensor receives and converts the data into electrical signals and sends them to the data conversion and output processing module, thereby obtaining the image data of each row of tobacco leaves.

4. A closed tobacco leaf image acquisition device according to claim 2 or 3, characterized in that: The sensor is a CCD charge coupled device or a CMOS complementary metal oxide semiconductor.

5. The closed tobacco leaf image acquisition device according to claim 1, characterized in that: During the scanning process, the obtained image data is temporarily stored in a buffer.

6. The closed tobacco leaf image acquisition device according to claim 1, characterized in that: After scanning is completed, the image data stored in the buffer will be transferred to the computer in sequence through the USB interface.

7. The closed tobacco leaf image acquisition device according to claim 6, characterized in that: The image data transferred to the computer is stored on a hard disk or other storage media.

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