20results about How to "Reduce contrast" patented technology

The invention discloses an enhanced photoacoustic microscopic imaging method based on physical degradation learning, which comprises the following steps of: on the basis of a photoacoustic imaging principle, degrading an image of a real photoacoustic microscopic image to the ground into a low-quality photoacoustic microscopic image through physical model degradation learning with variability. A high-quality photoacoustic microscopic imaging image is used as a target of supervised training, deep learning is used as a basis, the high-quality photoacoustic microscopic imaging image is input into a self-designed convolutional neural network with an attention mechanism for network training, the quality of a reconstructed image is evaluated until the reconstruction quality reaches the standard, and otherwise, the above steps are executed again. And inputting a real low-quality photoacoustic image into the trained neural network to obtain a reconstructed high-resolution photoacoustic image. According to the method, the resolution ratio and the contrast ratio of the deep photoacoustic microscopic image can be effectively improved, meanwhile, the photoacoustic microscopic image can be denoised, the dependence on the data set can be effectively reduced due to the fact that the data set is obtained through the physical model, and the reconstruction effect under different environments can be improved.

The invention provides an infrared weak and small target detection method and system, electronic equipment and a storage medium, and belongs to the technical field of target detection, and the method comprises the steps: improving a YOLOv8 model for the features of an infrared weak and small target image; and performing target detection on the infrared weak and small target image by using the improved YOLOv8 model. According to the invention, a stronger infrared weak and small target detection capability is provided for the YOLOv8 model, and the problem of target detection precision bottleneck of a traditional model in a complex scene is effectively solved.

The invention provides a lock chamber wall deformation monitoring method, device and system. The method comprises the following steps: S1, acquiring a displacement data set of a lock chamber wall in a first preset period from the current moment; s2, based on the displacement data set, whether the deformation condition of the lock chamber wall meets a first alarm condition or not is judged according to a preset judgment rule; when the first alarm condition is met, generating first early warning information and sending the first early warning information to preset user equipment; when the first alarm condition is not met, S1 is executed; wherein the preset judgment rule means that a monitoring curve set is generated based on the displacement data set; obtaining a first similarity score between the monitoring curve set and the sample curve set; and when the first similarity score is lower than a first score threshold, considering that the deformation condition of the lock chamber wall meets a first alarm condition. A displacement time curve mode is used for monitoring, so that the data volume is reduced, and the overall monitoring efficiency is improved.

The invention discloses a road crack segmentation method and device based on deep learning, electronic equipment and a program product. According to the method, two collaborative and functional complementary processing paths are adopted to perform parallel processing on a to-be-segmented image so as to obtain corresponding feature information: on one hand, the to-be-segmented image is converted into a feature sequence containing spatial position information, and global semantic modeling is performed on the feature sequence; global semantic features representing the overall shape of the crack and long-range semantic dependence are obtained; and on the other hand, local texture and edge detail information of the crack is directly extracted from the to-be-segmented image, and detail enhancement features are obtained. Thirdly, fusing the global semantic features and the detail enhancement features to obtain target fusion features considering crack positioning, connectivity and boundary and texture expression; according to the segmentation result output based on the target fusion features, even tiny cracks can be effectively depicted, and then the continuity, boundary definition and robustness of tiny crack segmentation under the complex road background can be improved.

The utility model relates to the technical field of optical lenses, in particular to a miniature dot matrix contrast-reducing lens, which comprises a lens, the lens comprises a central optical area and a miniature dot matrix area, the miniature dot matrix area comprises two dot matrix structures, namely a large dot matrix with the diameter of 0.18 mm and a small dot matrix with the diameter of 20-30 microns, the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8, and the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8. The covering density of the dot matrix areas is 10-45%, the dot matrix spacing is 0.2-0.65 mm, the depth of the dot matrix is 2-8 microns, the edge of the dot matrix is provided with a smooth transition area of 0.05-0.1 mm, the lens further comprises micro-lens areas, and the micro-dot matrix areas and the micro-lens areas are alternately distributed. The central optical area of the lens is not covered by the dot matrix, so that clear view is guaranteed; the contrast of the dot matrix area is accurately regulated and controlled, full-view blurring is avoided, micro-lens defocusing and dot matrix contrast reduction are combined, eye axis growth is doubly inhibited, dot matrix size and interval optimization is achieved, and glare and visual interference are reduced.

The present invention discloses an aviation airborne navigation image target recognition method based on spatial entropy harmony search. The method utilizes the position distribution information of the image grayscale space to calculate the image grayscale space distribution entropy value, and maps it into a uniform distribution function. The function is then processed by 2D-DCT, transform system weighting and inverse 2D-DCT linear transformation to achieve simultaneous enhancement of the global and local contrast of the original image. The method is combined with the maximum entropy harmony search algorithm. Although the method is similar to the genetic algorithm, it adopts a multi-point mating mode in the process of searching for new solutions in the field, so that the new solutions are more diverse and the possibility of the algorithm jumping out of the local optimal solution is improved.

The utility model relates to the technical field of near-to-eye display, and discloses an optical module and a head-mounted display device, the optical module is composed of a first optical element and a second optical element; the first side surface of the first optical element faces human eyes; the first side surface of the second optical element faces the second side surface of the first optical element, and the second side surface of the second optical element faces the display screen; the optical module satisfies the following conditions: 0 < = sin (theta1) / sin (theta2) < = 7; wherein theta1 is the maximum field-of-view principal ray incident angle of the first optical element, and theta2 is the maximum field-of-view principal ray emergent angle of the second optical element. According to the head-mounted display device, the refraction angle of the light between the lenses can be limited in a proper range while the size of the optical module is miniaturized, the imaging quality and the size of the optical module are well balanced, and the user experience is effectively improved while the miniaturization design requirement of the head-mounted display device is met.

The present disclosure provides a light-emitting device with improved light output and a preparation method thereof, and belongs to the technical field of optoelectronic manufacturing. The light-emitting device comprises a light-emitting functional layer, a driving substrate and a brightening functional layer. The light-emitting functional layer is located on the driving substrate, and comprises a plurality of light-emitting units arranged at intervals. The brightening functional layer comprises a bearing layer, a reflective layer and a plurality of light-emitting lenses. The bearing layer is located on the surface of the light-emitting functional layer away from the driving substrate. The surface of the bearing layer has a plurality of light-emitting grooves exposing the light-emitting functional layer. Each light-emitting groove exposes at least one light-emitting unit. The reflective layer is located on at least the groove wall of each light-emitting groove. The light-emitting grooves correspond to the light-emitting lenses one by one, and the light-emitting lenses are located in the corresponding light-emitting grooves. The embodiments of the present disclosure can improve the problem of low light output of the light-emitting device and improve the brightness of the light-emitting device.

The utility model discloses an adjustable reflective non-reflective camera lens, and relates to the technical field of camera lenses. The camera comprises a camera and a lens arranged on the front side of the camera. The camera is provided with an adjusting mechanism, a dustproof mechanism and a light supplementing mechanism. The adjusting mechanism comprises an adjusting assembly, a control assembly and a limiting assembly, the adjusting assembly comprises a convex lens fixedly installed on the inner wall of the lens, a concave lens is slidably installed on the inner wall of the lens, a movable groove is formed in the lens, an adjusting block is fixedly installed on the outer wall of the lens, a rectangular groove is formed in the adjusting block, and the limiting assembly is arranged in the rectangular groove. A rack is fixedly installed on the outer wall of the concave lens, and the right side of the rack extends into the rectangular groove and is in sliding connection with the rectangular groove. According to the adjustable reflective non-reflective camera lens, the adjusting mechanism, the dustproof mechanism and the light supplementing mechanism are arranged, and parameters of the lens can be adjusted according to requirements of a user.

The utility model discloses a kind of double-effect contrast defocus microlens sheet, including substrate, the substrate both sides include outer side and inner side, the substrate includes by the curvatures of outer side and inner side jointly constituted refractive area of correcting vision;The outer side surface has regularly and uniformly distributed miniature convex lens, the center of the miniature convex lens is equipped with myopia refractive correction area;The inner side is processed into annular scattering area with scattering effect, the center of the annular scattering area is center visible area without scattering effect;The center of the myopia refractive correction area and center visible area coincides with the geometric center of substrate. Advantageous effect: the utility model can achieve the premise that lens basic visible effect, the function of two can control myopia degree deepening principle is stacked in the mode of double myopia prevention and control effect.

The application discloses a medical image tumor segmentation model based on a TransUNet framework and a construction method and a segmentation method thereof, the construction method comprising constructing a segmentation model based on the TransUNet, wherein an encoder of the segmentation model comprises CNN modules and a self-defined VSS module connected in sequence, the output ends of each convolution block of the CNN modules are input into a decoder of the segmentation model through a jump connection layer, the self-defined VSS module comprises a plurality of novel conversion layers stacked in series based on a Mamba module and a focus linear attention module, the self-defined VSS module performs multi-level feature interaction and global modeling on first encoding features output by the CNN module to obtain second encoding features; and the decoder performs feature fusion and up-sampling on the second encoding features and the output of the jump connection layer to obtain a segmentation image for a sample image. The application can significantly improve the segmentation robustness and precision of breast ultrasound images with low contrast, high noise and fuzzy boundaries.

A protective cover includes a flat plate-like protective member (37A), and a scattered ray removal grid (44), in which the scattered ray removal grid is a grid in which a plurality of transmission parts (47) that transmit the radiation and a plurality of absorption parts (46) that absorb the radiation are alternately arranged and a boundary line between the transmission part and the absorption part extends in one direction, and further, in a case in which, on the imaging surface (24A), a direction connecting a chest wall side and a side opposite to the chest wall is defined as a first direction and a direction orthogonal to the first direction is defined as a second direction, the scattered ray removal grid is disposed at a facing position that faces the imaging surface in a posture in which a direction in which the boundary line extends is parallel to the second direction.

The present invention provides a vertical measurement method, a focusing and leveling system and an exposure device based on pupil modulation. The focusing and leveling system adds a first pupil modulation element in the projection component, and adds a second pupil modulation element complementary to the first pupil modulation element in the first detection component. The second pupil modulation element achieves a filtering effect on the surface pattern of the object to be measured through energy distribution modulation and optical phase modulation of the pupil surface. The first pupil modulation element and the second pupil modulation element increase the wave aberration through optical phase modulation of the pupil surface, reduce the contrast of the surface pattern of the object to be measured, and weaken the influence of the surface pattern of the object to be measured on the energy distribution; and the first pupil modulation element and the second pupil modulation element reduce the uneven energy distribution of the measuring beam caused by the reflectivity through energy distribution modulation, thereby reducing the vertical measurement error, improving the vertical measurement accuracy, and ensuring a better imaging transmission effect from the projection component to the first detection component.

The invention belongs to the technical field of visual inspection, and particularly relates to electroplated product online image detection equipment which comprises detection equipment, a conveying table arranged in the detection equipment and used for conveying electroplated products and a detection head arranged in the detection equipment. An air inlet is formed in the end, away from the detection head, of the protective cover, the protective cover is externally connected with a negative pressure fan through an air pipe, a treatment box is arranged in the protective cover and communicates with an inner cavity of the protective cover through an air hole, a filter plate is fixedly installed in the treatment box, and a storage box is rotationally installed at the bottom end of the filter plate; a wiping roller attached to the bottom of the filter plate is movably mounted in the storage box and is hollow, a liquid outlet is formed in the outer wall of the wiping roller, corrosive mist and metal dust in air are sucked and prevented from being attached to the surfaces of a lens and a light source of the detection head, imaging blurring and contrast reduction are prevented, and continuous and stable operation of the detection process is guaranteed.

This utility model discloses a screen structure and a high-gain white screen, belonging to the field of projection display technology. The screen structure includes two substrate layers, with a barrier layer bonded between the two substrate layers via an adhesive layer. The substrate layers, adhesive layer, and barrier layer have different refractive indices. The high-gain white screen includes a protective layer, a diffusion layer, and the aforementioned screen structure, arranged sequentially from the incident surface to the back surface. By utilizing the difference in refractive indices between the substrate layer, adhesive layer, and barrier layer, an optical effect similar to mother-of-pearl is created, reducing light penetration and enhancing light reflection and scattering. This improves detail rendering, reduces the loss of dark areas, enhances resistance to external light interference, reduces contrast, reduces color saturation distortion, reduces light loss during propagation, improves overall brightness uniformity, ensures full presentation of high-resolution signal details, and is compatible with more projection devices.

The invention discloses a display device capable of being switched between transmission and reflection. The display device comprises an OLED display panel and a liquid crystal display panel arranged on the light emitting side of the OLED display panel. The liquid crystal display panel comprises a second substrate, a liquid crystal layer and a first substrate which are sequentially arranged, a linear polarizer and a quarter-wave plate are arranged on the first substrate, the quarter-wave plate is located on the side, facing the liquid crystal layer, of the linear polarizer, and the light-transmitting axis of the linear polarizer and the fast and slow axis of the quarter-wave plate form an angle of 45 degrees. In the transmission mode, liquid crystal molecules in the whole liquid crystal layer are controlled to be in a standing posture, the OLED display panel is opened and displays a picture, light rays emitted by the OLED display panel can penetrate through the liquid crystal display panel, ambient light reflected by the OLED display panel can be absorbed by the linear polaroid, and therefore the situation that the contrast ratio of transmission display is reduced by the ambient light reflected by the OLED display panel is avoided; and in the reflection mode, the OLED display panel is closed, so that the liquid crystal display panel can display pictures by using the ambient light reflected by the OLED display panel.

The invention discloses a light source device and an optical imaging system. The first laser light source comprises a first laser module and a second laser module, the first laser module is used for generating first laser, and the second laser module is used for generating second laser. The second laser light source comprises a third laser module and a fourth laser module, the third laser module is used for generating third laser, and the fourth laser module is used for generating fourth laser. The first polarization light combination module is arranged on a light path where the first laser and the third laser are located and used for generating first mixed light. The second polarization light combination module is arranged on the light path where the second laser and the fourth laser are located and used for generating second mixed light. The wavelength light combination module is arranged on a light path where the first mixed light and the second mixed light are located. According to the light source device in the embodiment, light combination is conducted on multiple paths of laser in the mode that polarization light combination is conducted firstly and then wavelength light combination is conducted, light spots of finally generated emergent light can be small, and the design difficulty and hardware cost of elements in a follow-up light path are reduced.

This utility model discloses a material transport system with integrated status monitoring and energy-saving functions, belonging to the technical field of material transport equipment. It includes an upper-level terminal, a lower-level controller, and at least three belt conveyors connected in sequence. All belt conveyors are connected to the lower-level controller, which in turn is connected to the upper-level terminal. Each belt conveyor's drive motor is equipped with an integrated temperature and vibration sensor to detect abnormal vibration and temperature. High-definition cameras are installed under the belts to detect belt tears. A material flow detection device is installed above the belts to detect material passing through a designated location and control the start and stop of the next-level belt conveyor accordingly. This utility model effectively solves the problems of high energy consumption during belt conveyor startup, low transport efficiency, and insufficient equipment health status monitoring in existing material transport systems.

The present invention relates to the field of image data processing technology, and specifically to a data visualization analysis method, system and medium for land management, including real-time acquisition of remote sensing images; grayscale preprocessing of remote sensing images, and updating of remote sensing images; connected domain division of remote sensing images to obtain at least one connected domain; confirming fog-affected areas based on grayscale values ​​and gradient changes of a connected domain and its surrounding connected domains; defogging the fog-affected areas of the remote sensing images to obtain defogged remote sensing images; and importing the defogged remote sensing images into a geographic information system for visualization analysis. The present invention identifies foggy areas by distinguishing connected domains affected by fog from static fog-like areas, and utilizing gradient attenuation and edge difference features. Based on this, defogging and restoration are performed to obtain more accurate and clear remote sensing images, providing a solid foundation for data analysis.

The application relates to a video image processing method and device, electronic equipment and a storage medium. The method comprises the following steps: performing background and target separation processing on multiple images in a target video respectively to obtain multiple target background images and multiple first target images, counting the total number of pixel points in the multiple first target images and the number of times that each first pixel point in the multiple first target images appears in the multiple first target images; based on the ratio of the total number of pixel points to the number of times that each first pixel point appears, second pixel points that do not satisfy a probability threshold range are selected from each first pixel point in the multiple first target images; the pixel information of the second pixel points in the first target image is replaced by the pixel information corresponding to the pixel coordinates of the second pixel points in a preset reference image to obtain a second target image; and the second target image and the corresponding target background image are merged to obtain multiple target images. The video quality can be effectively improved.