17results about How to "Meeting Imaging Needs" patented technology

The invention belongs to the technical field of image data processing, and particularly relates to an intelligent tobacco leaf curing method and system based on image recognition, and the method comprises the steps: obtaining a to-be-cured tobacco leaf feature map and a cured tobacco leaf feature map, and carrying out the imaging evaluation, thereby obtaining an imaging quality evaluation value; analyzing the imaging quality evaluation value, carrying out imaging adjustment, obtaining an imaging characteristic standard value, obtaining a to-be-flue-cured tobacco leaf quality parameter set based on the to-be-flue-cured tobacco leaf characteristic graph, calculating the to-be-flue-cured tobacco leaf quality evaluation value, carrying out to-be-flue-cured tobacco leaf pre-screening based on the to-be-flue-cured tobacco leaf quality evaluation value, and matching a tobacco leaf first-flue-curing mode, image segmentation is carried out on the characteristic graph of the flue-cured tobacco leaves to form a plurality of research and judgment units, quality monitoring values of the flue-cured tobacco leaves are obtained, a tobacco leaf redrying judgment result is obtained by comprehensively analyzing a tobacco leaf first-drying mode and the quality monitoring values of the flue-cured tobacco leaves, and the tobacco leaf redrying judgment result is matched with a tobacco leaf redrying mode. According to the method, accurate image recognition and classification in the tobacco leaf curing process are realized, and the applicability and scientificity of curing mode matching are improved.

This application relates to an image processing method, apparatus, and computer device. The method includes: performing face recognition on a target image to obtain a target face region; determining target pixel information for each target pixel in the target face region based on reference pixel information of each reference pixel in a reference face region of each frame of the original image; for each target pixel, converting the target pixel information into color coordinates, and determining the weight of the target pixel based on the hierarchical relationship between the color coordinates and the range of human face coordinates; for each frame of the original image, determining the reference brightness of each reference pixel in the reference face region of the original image based on the weight of each target pixel and the original brightness of each reference pixel in the reference face region of the original image; and determining the current brightness of the target face region based on the reference brightness of each reference pixel in the reference face region. This method can improve the accuracy of face region brightness.

The invention discloses a satellite top-speed area array maneuvering imaging effectiveness evaluation method. The method comprises the following steps: determining input data; comprising the steps of inputting an imaging area, satellite orbit data, attitude data and an imaging point moment; the method comprises the following steps: forming a convex polygon S1 according to an input imaging area, performing grid division on the S1 to obtain position information corresponding to a central point of each grid, and recording the position information as U1; according to the satellite orbit data, the attitude data and the imaging point time, in combination with a load parameter of a satellite-carried imaging sensor, calculation of an actual imaging area on the ground is completed, an actual imaging area set S2 is obtained, the actual imaging area set S2 comprises a plurality of actual imaging areas, and position information of a geometric center corresponding to each actual imaging area is recorded as U2; and judging whether an imaging blind area exists in the input imaging area or not according to the U1 and the U2. According to the method, the problem of deep interpretation of the attitude maneuver path planned by the satellite and the coverage correctness of the input imaging area is solved.

This invention provides an imaging method and image acquisition system, relating to the technical field of computer vision. The method includes: acquiring 3D point cloud data of a target object and image data acquired by each camera at different exposure levels; projecting the 3D point cloud data onto the imaging plane corresponding to each camera to generate a sparse depth map; performing Gaussian processing on the sparse depth map to output a dense depth map; using the dense depth map and the camera's intrinsic parameters, back-projecting the pixels of the image data corresponding to each camera onto the world coordinate system to obtain pixels in the world coordinate system; selecting a preset reference viewpoint and reprojecting the pixels in the world coordinate system onto the imaging plane of the reference viewpoint to obtain the target image. The imaging method and image acquisition system provided by this invention can achieve 3D-guided 2D alignment, making the imaging process independent of the image's own grayscale or texture features, thereby improving the image acquisition effect to meet imaging requirements.

The embodiment of the application discloses a fixed focus lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens arranged in sequence along an optical axis from an object plane to an image plane; the first lens is a negative focal length lens, the second lens is a negative focal length plastic aspheric lens, the third lens is a positive focal length plastic aspheric lens, the fourth lens is a positive focal length glass lens, the fifth lens is a positive focal length plastic aspheric lens, the sixth lens is a negative focal length plastic aspheric lens, the seventh lens is a positive focal length plastic aspheric lens, and the eighth lens is a positive focal length plastic aspheric lens. By adopting the technical scheme, the fixed focus lens comprises eight lenses, the focal lengths and surface shapes of the lenses are reasonably distributed, the design of the fixed focus lens with excellent comprehensive performance which takes into account imaging requirements and compact structure is finally realized, and the comprehensive performance meets the use requirements of a general sensor of security monitoring.

The invention provides an automatic exposure method for near-infrared first-area fluorescence imaging, which comprises the following steps of: imaging an indocyanine green sample which excites near-infrared first-area rays by using different exposure levels to obtain a series of fluorescence image data under different exposure conditions, each exposure level is determined by a specific gain and shutter speed combination; establishing a mapping relation between the gray scale and the exposure level of the fluorescence image; predicting the performance of the current fluorescence image under any exposure level based on the established mapping relation; and according to the prediction result, selecting the exposure level capable of generating the optimal image quality under the current condition as the optimal exposure level. According to the method, the fluorescence imaging automatic exposure method is specifically constructed, the change of the exposure environment can be responded in real time in the process of near-infrared first-area fluorescence molecular image surgical navigation, and correct fluorescence imaging exposure is carried out.

The visible-near infrared micro-nano photonic device designed by the invention has the advantages of polarization insensitivity, wide angle, high manufacturability, easiness in integration, wide spectrum transmission spectrum curve with strong spectrum curve controllability and the like. As a spectrum modulation element, band-pass imaging can be realized, the luminous flux can be enhanced, the view field range can be expanded, and the processing and preparation difficulty can be reduced. A researched and designed micro-nano photonic device and a spectrum detection system are fused and packaged at the front end of a large-area array detector to obtain a novel spectrum detector. When a target spectrum is modulated by a device, a gray value of each pixel can be obtained, and spectrum reconstruction comparative analysis is performed on the target spectrum in combination with a proposed low-rank logarithmic regularization matrix truncation spectrum reconstruction algorithm based on a micro-nano photonic device, so that high-precision spectrum reconstruction can be performed on the target spectrum in a large disturbance environment, and the accuracy of spectrum reconstruction is improved. And target spectral features can be stably captured. And an important research support is provided for subsequently realizing the development of a miniaturized satellite-borne spectrum reconstruction imager.

The invention discloses an infrared wide-angle lens and an infrared wide-angle lens module, and belongs to the technical field of optical imaging, and the infrared wide-angle lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, the second lens has positive focal power; the third lens has positive focal power; the fourth lens has positive focal power; the fifth lens has positive focal power; the infrared wide-angle lens satisfies the following conditional expressions: 1.010 < = Tan (Semi-FOV) / (DT11 + DT12) < = 3.917; and ET3 / (SAG31-SAG32) is more than or equal to 0.737 and less than or equal to 0.826. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are combined and configured, so that more light rays can enter the infrared lens, the imaging surface of the infrared lens is ensured to have enough illumination, the field angle of the infrared lens is increased, and the large wide angle characteristic of the infrared lens is realized.

The utility model provides an infrared camera device. The infrared camera device sequentially comprises a first surface, a first diffraction surface, a second diffraction surface, a second surface and an imaging chip from a first side to a second side, the first diffraction surface and the second diffraction surface have positive diopters, the focal lengths of the first diffraction surface and the second diffraction surface are different, and the first diffraction surface and the second diffraction surface are super surfaces. According to the utility model, the problem of poor imaging quality of an infrared camera device in the prior art is solved.

The utility model relates to the technical field of endoscope, disclose a kind of endoscope imaging system and hyperspectral endoscope, system includes: light source device, including light source module, light source adjusting assembly, light source module emits light after passing through light source adjusting assembly and emits;Light source adjusting assembly is used to adjust the light intensity when irradiating to target object;Lens device, including light emitting component, imaging component;Light emitting component is used to emit the illumination light produced by light source device to target object, camera lens is used to receive the illumination light reflected from target object back, and image in image sensor;Data processing device is connected with image sensor communication, for obtaining the spectral data after image sensor, to generate the image data corresponding to target object.The utility model provides an endoscope imaging system by light source adjusting assembly adjusts light intensity, so that endoscope imaging system can be under different irradiation conditions Stable output suitable light intensity, improve the stability and imaging quality of endoscope imaging.

The high-pressure injector capable of adjusting the injection pressure in real time comprises a machine body, a piston rod arranged in the machine body and a driving mechanism controlling the piston rod to stretch and move, a needle cylinder is detachably installed at the position, corresponding to the piston rod, of the machine body, and the piston rod can reciprocate in the needle cylinder. Pressure sensors are mounted at the ends of the piston rods; a displacement detection assembly is arranged in the machine body; a control module is integrated in the machine body, and the driving mechanism, the pressure sensor and the displacement detection assembly are all in electrical feedback connection with the control module. When the pressure sensor monitors that the internal pressure of the needle cylinder reaches a critical value, the control module can control the piston rod to retreat by a certain stroke through the driving mechanism and then control the piston rod to decelerate and advance forwards. The utility model has the beneficial effects that a contrast agent can be prevented from being injected into the blood vessel of a patient under the condition that the critical pressure is exceeded, so that the conditions of vascular rupture, vascular intima injury, contrast agent exosmosis and the like are prevented.

The application provides a fisheye lens, which comprises first to eighth lenses and a protection glass in sequence along an optical axis from an object side to an image side, and a diaphragm is located between the fourth and fifth lenses; the first to third lenses all have negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; the fourth and fifth lenses have positive refractive power and are biconvex; the sixth lens has negative refractive power, the object side surface is a concave surface, and the image side surface is a convex surface; the seventh lens has positive refractive power and is biconvex; the eighth lens has negative refractive power and is biconcave; all the lenses are glass spherical lenses; through specific refractive power arrangement, surface configuration, refractive index and Abbe number range limitation, a miniaturized structure with an optical total length less than 21 mm and an effective diameter of each lens less than phi 12 mm is realized, the MTF is greater than 0.6 in a 0.8 field of view at a spatial frequency of 83 lp / mm, the total field of view is greater than 0.45, the target surface height is greater than 4.6 mm to match a 1 / 2.4 inch sensor, the F-Theta distortion is less than 1%, and the relative luminance at the maximum field of view is greater than 55%.

The invention relates to the technical field of fruit and vegetable processing equipment, in particular to a fruit and vegetable maturity visual identification sorting device which comprises a conveyor body, the output end of the conveyor body is fixedly connected with a hopper, the output end of the hopper is provided with a conical conveying mechanism, and the output end of the conical conveying mechanism is provided with a detection mechanism. The sorting mechanism is fixedly installed at the bottom end of the detection mechanism, the detection mechanism comprises a bottom plate, a clamping mechanism and a detection platform, the clamping mechanism is installed at the top end of the bottom plate and located at the output end of the conical conveying mechanism, and fruits and vegetables are automatically contracted and arranged through the conical conveying mechanism before entering a detection area and enter a cylinder in a single-row ordered posture; the problems of rolling deviation and uncontrollable postures of the fruits and vegetables easily caused by a straight conveying belt are avoided; when fruits and vegetables fall, a rectangular block slides along an inclined groove to compress a spring, a clamping silica gel plate is pushed to adaptively clamp the fruits and vegetables with different sizes, the fruits and vegetables are kept stable in the detection process, and image blurring caused by shaking and displacement is avoided; and grading damage is effectively avoided.

The prime lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from an object plane to an image plane along an optical axis, the first lens is a negative-focal-power biconcave lens, the second lens is a negative-focal-power concave-convex lens, the third lens is a positive-focal-power convex-concave lens, the fourth lens is a positive-focal-power lens, the image side face of the fourth lens is a convex face, the fifth lens is a positive-focal-power biconvex lens, the sixth lens is a negative-focal-power biconcave lens, and the seventh lens is a positive-focal-power biconvex lens. And the eighth lens is a convex-concave lens with negative focal power. According to the technical scheme, the prime lens comprises eight lenses, and the focal power and the surface type of each lens are reasonably distributed, so that the imaging quality of the optical system is improved, the prime lens is ensured to have a good imaging effect, the relative illumination between an edge image and a center image can be improved, and the imaging quality of the optical system is improved. And the imaging requirement of the security lens is met.

The utility model relates to a prime lens, which sequentially comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power and a sixth lens with negative focal power along an optical axis from an object side to an image side, totally six lenses, the image side surface of the first lens is a concave surface; the second lens is a convex lens; the third lens is a concave-convex lens; the image side surface of the fourth lens is a convex surface; the fifth lens is a convex-convex lens; the sixth lens is a concave-convex lens; the effective focal length F1 of the first lens and the effective focal length F of the prime lens meet the following relation: F1 / F is more than or equal to-1.58 and less than or equal to-1.40; the effective focal length F3 of the third lens and the effective focal length F of the prime lens meet the following relation:-7.36 < = F3 / F < =-5.14. The prime lens of the utility model has at least one of the characteristics of high resolution, low cost, small volume, day and night use and the like.

The invention discloses a single-cell photoelectric detection chip based on rectangular sleeve three-dimensional focusing and a preparation method thereof, and belongs to the technical field of single-cell detection.The preparation method comprises the steps that 1, a mask is formed; step 2, corroding an alignment mark; step 3, spin coating of photoresist, pre-baking, extensive exposure, post-baking and hardening; step 4, spin-coating a photoresist, pre-baking, exposing, post-baking, not developing, cooling, then spin-coating the photoresist, pre-baking, exposing, post-baking, developing, and hardening to form a microfluidic mold; step 5, mixing the prepolymer of the polydimethylsiloxane polymer with a curing agent, and pouring the mixture on a mold after vacuum degassing; and step 6, aligning and bonding two pieces of PDMS with the same structural parameters, and then bonding the two pieces of PDMS with the quartz substrate. According to the invention, high-sensitivity electrical detection and high-resolution image detection can be carried out at the same time, the problem of imaging blurring caused by a three-dimensional focusing channel manufactured by 3D printing is solved, the manufacturing efficiency is improved, and the manufacturing cost is reduced.

The present invention discloses a method and system for automatically positioning the position of an OCT delay line based on a fundus B_scan image, wherein the method includes: while collecting the B_scan image in real time, adjusting the position of the delay line along the axial direction; calculating the gradient parameters of each frame of the B_scan image according to a preset image processing model, obtaining the maximum gradient position data of the B_scan image; fitting the maximum gradient position data, and calculating the positioning data of the optimal position of the delay line with the fitting result. The present invention utilizes the characteristics of the B_scan image itself in conjunction with the high-precision real-time response of a stepper motor to quickly and accurately locate the position of the OCT delay line. During the adjustment process, feedback and compensation can be implemented according to the eye movement generated in the axial direction, so that the OCT image is always in the optimal interference state. The technical purpose of achieving high-contrast tomographic imaging and meeting the imaging needs of people with different axial lengths is achieved.