33results about How to "Improve edge definition" patented technology

The invention provides a method for reducing artifacts in an image in real time. The method includes the following steps: collecting a reference image: moving an ultrasonic probe located on a treatment position to a position where the reference image can be obtained, collecting an image of a nidus on the reference image position, and using the collected image of the nidus as the reference image, wherein the reference position is one position which enables a portion of the image collected by the ultrasonic probe, which is corresponding to a treatment target section, to have few artifacts or no artifact; collecting a treatment image: moving the ultrasonic probe from the reference position back to the treatment position, and collecting a current treatment image of the nidus; and registering and fusing images: registering and fusing the collected treatment image and the reference image, and outputting an image after fusion which is an actual treatment image. Correspondingly, the invention provides a device for reducing the artifacts in the image in real time. The method and the device for reducing the artifacts in the image in real time can improve location accuracy of the ultrasonic probe to the treatment target section, and accordingly improve treatment efficiency and treatment effects of an operation guided by ultrasound.

Method and system for forming one or more predetermined patterns on a substrate for making a photovoltaic device. The method includes aligning at least a first droplet source with a substrate, dispensing one or more first droplets associated with one or more first materials from the first droplet source, and forming at least a first pattern of one or more second materials on the substrate by at least the first droplet source. Additionally, the method includes providing a first light beam incident on at least the first pattern, obtaining a first signal associated with the first pattern in response to the first light beam, processing information associated with the first signal, and determining one or more first characteristics of the first pattern based on at least information associated with the first signal.

The invention discloses an analysis iteration fast frequency spectrum extrapolation method for single image restoration, comprising an iteration system initialization process and an analysis iteration process, wherein in the iteration system initialization process, a degraded image frequency spectrum is calculated, and a primary iteration solution and a system primary parameter are set; in the analysis iteration process, the level of images and gradient information along a vertical direction are estimated by continuously elaborate gradient information threshold values in a shrinking way, a forecasting frequency spectrum is forecasted and obtained by analyzing an iteration frequency spectrum and gradient information frequency spectrum, and a high-definition image is obtained by synthetically correcting the degraded image frequency spectrum and forecasting frequency spectrum analysis through image frequency spectrum synthesis correction. The analysis iteration fast frequency spectrum extrapolation method is based on a fast Fourier transform technique, achieves the fast image restoration with little complexity through frequency spectra below cut-off frequencies and by extrapolating frequency spectra above the cut-off frequencies and has obviously superior deblurring and noise restraining capability compared with a conventional method, thereby obviously enhancing the signal-to-noise ratio; and the analysis iteration fast frequency spectrum extrapolation method is convenient to realize by utilizing image processing hardware formed by fast Fourier transform DSP chips.

The invention discloses a laser melting and etching marking device and method based on a transparent material, solving the problem the transparent material is subjected to laser marking at high transmittivity and belonging to the field of micro processing. The device comprises a laser, a computer, laser marking system software, a motion control system, a worktable, a clamp, a groove base, a heat-conducting medium and a transparent material plate, wherein the laser is connected with the computer; the worktable is arranged below the motion control system; the heat-conducting medium is paved on the groove base; and the transparent material is used as a cover plate and is fixed above the worktable by using a clamp. During marking, laser is focused on the contacted surface between the transparent material and the heat-conducting medium through the motion control system; the medium absorbs laser energy and the laser energy is converted into heat which is transmitted to the closely-contacted transparent material, so that the transparent material reaches a melting point in an extremely-short time, further the transparent material is separated from a substrate and the indention is realized. According to the laser melting and etching marking device and method disclosed by the invention, the laser melting and etching marking on the transparent material is realized, the resolution and the edge sharpness of marking patterns are improved and the roughness on the bottom surface of a microgroove reaches micro size.

A method and apparatus is provided for preparing samples for observation in a charged particle beam system in a manner that reduces or prevents artifacts. An ion beam mills exposes a cross section of the work piece using a bulk mill process. A deposition precursor gas is directed to the sample surface while a small amount of material is removed from the exposed cross section face, the deposition precursor producing a more uniform cross section. Embodiments are useful for preparing cross sections for SEM observation of samples having layers of materials of different hardnesses. Embodiments are useful for preparation of thin TEM samples.

Provided is a device for spraying and sucking hot water on an injured animal surface model in a self-control mode. A hot water generation source is arranged in a box, and an electric heating pipe, a heat source temperature sensor and a water level sensor are arranged in the hot water generation source. A hole is formed in the hot water generation source, an electromagnetic valve is arranged on the hole, the lower end of the electromagnetic valve is provided with a hot water spraying hose, the hot water spraying hose is connected with an injury cup, silicon rubber is arranged on the rim of an injury cup, an injury supporting plate used for fixing the animal surface is arranged on the lower portion of the rim of the injury cup, a suction pipeline is arranged in the silicon rubber and is connected with a suction collection bottle, a hot water spraying nozzle is arranged in the injury cup, negative pressure suction is started in the injury cup during injuries, hot water after the injuries is quickly sucked, spraying and suction are synchronous, and water temperature effectively keeps uniform. Premise control of hot water injury time, the area and temperature is achieved. Operation is simple and convenient to achieve, injured edges are clear, repeatability is good, scald surfaces are consistent on the same condition, and reference is provided for burn and scald wound healing and medication research.

The invention discloses a blurred image non-blind restoration method based on edge image block sharpening. The method comprises the following steps: establishing an edge image block database; extracting an edge segmentation image G1 and a smooth region segmentation image G2 of the blurred image G; carrying out grid division on the edge segmentation image G1, and carrying out matching sharpening processing on an edge region position image block with a pixel value in a divided grid region to obtain an edge region image G1'after sharpening updating; restoring the smooth region segmentation imageG2 to obtain a restored smooth region image G2 '; and obtaining a restored image G' of the blurred image G. The method has the advantages that the method is simple; according to the method, grid division is carried out on an edge area image, for each divided unit grid, a clear image block with the maximum gray similarity matching coefficient is searched and determined in an image block database, image block sharpening updating of an edge area is completed, edge definition is improved, and meanwhile the ringing effect caused by restoration algorithm iteration is avoided.

The application discloses an image segmentation method, an image segmentation device, electronic equipment, and a computer readable storage medium, wherein the image segmentation method comprises: acquiring an image to be processed; extracting a first image in a preset area in the image to be processed, wherein the preset area contains a specific feature in the image to be processed; performing enhancement processing on the first image to obtain a second image; and inputting the second image into an image segmentation network to obtain a segmentation result. The solution of the application mayreduce the occurrence of image segmentation errors and improve the accuracy of image segmentation to a certain extent.

The invention discloses an image processing method and device, relates to the field of medical images, and can solve the problem that the contrast ratio and the resolution ratio of the medical image cannot be effectively enhanced in the prior art. The image processing method comprises the steps of obtaining a first image and a second image, wherein the first image and the second image are the same; performing histogram equalization processing on the first image; performing two-dimensional discrete wavelet transformation on the processed first image to obtain a first high-frequency subgraph anda first low-frequency subgraph; performing two-dimensional discrete wavelet transformation on the second image to obtain a second high-frequency subgraph and a second low-frequency subgraph; carryingout passivation fuzzy processing on the second high-frequency subgraph; and carrying out image fusion on the first high-frequency sub-image, the first low-frequency sub-image, the processed second high-frequency sub-image and the processed second low-frequency sub-image based on wavelet transformation. The method can be widely applied to the scene of processing the medical image.

A method of producing a display item of metalwork from sheet metal, the method comprising the steps of obtaining a digital image file containing an image of a subject; filtering the digital image file such that the resulting filtered image has increased contrast and enhanced edge definition; deleting unwanted parts of the filtered image; joining adjacent discrete portions of the filtered image together; manipulating the filtered image such that the minimum line width is greater than a predetermined thickness to form a subsequent image; and cutting the sheet metal in the form of the subsequent image.

The invention discloses an optical system and a head-mounted display device. The optical system comprises a first lens which is provided with a first surface and a second surface which are oppositely arranged, wherein the first lens further comprises a light coupling-in end face, and the light coupling-in end face is connected to the first surface and the second surface; a polarization reflector is arranged on the side, away from the light coupling-in end face, of the first lens; a light splitting lens is arranged on one side of the first surface of the first lens; a correction lens is arranged on the side, away from the light coupling-in end face, of the first lens and used for correcting aberration, and the polarization reflector is arranged between the first lens and the correction lens; an analysis lens is arranged on one side of the light coupling-in end face of the first lens, one side of the analysis lens deviating from the first lens is a light incidence face, and the light incidence face of the analysis lens is a free-form surface or an aspheric surface. According to the optical system, the light resolution can be improved, so the marginal definition of an imaging picture is improved.

Provide for endoscope lens rod system, wherein the rod lens system (1) has at least one inversion level (10, 11, 12), to be located in the distal intermediate image plane (7) in the intermediate image to the proximal intermediate image plane (15), each of them the reversal level (10, 11, 12) has at least one rod lens (16, 17, 18, 19, 20, 21) and the intermediate image to the next intermediate image plane, wherein the rod lens system (1) is formed in asymmetric rod lens system (1) and at least a rod lens (16, 17, 18, 19, 20, 21) are formed as asymmetric reversal level (10, 11, 12).

The invention discloses an image processing method and device, relates to the field of remote sensing images, and can solve the problem that the definition of a remote sensing image cannot be effectively enhanced in the prior art. The image processing method comprises the following steps: carrying out passivation fuzzy processing on a first image; performing various special-shaped diffusion on thefirst image after the passivation fuzzy processing to enable the noise of the first image in each direction to be smooth; copying the first image to obtain a second image; performing two-dimensionaldiscrete wavelet transform on the processed first image to obtain a first high-frequency sub-image and a first low-frequency sub-image, and performing two-dimensional discrete wavelet transform on theprocessed second image to obtain a second high-frequency sub-image and a second low-frequency sub-image; and performing image fusion on the first high-frequency sub-image, the first low-frequency sub-image, the second high-frequency sub-image and the second low-frequency sub-image according to the set high-frequency coefficient and low-frequency coefficient of the fused image to obtain a fused image. The method can be widely applied to the scene of processing the remote sensing image.

The invention provides an image edge brightness correction method and system, and a device for the image edge brightness correction method. The method comprises the following steps: shooting a calibration target with a specific pattern, and obtaining an image with the specific pattern; determining an abnormal region of the edge of the image through a standard brightness gradient curve of the image, and calculating a brightness deviation coefficient of the abnormal region; determining a correctable region in the abnormal region based on a standard resolution change curve of the image; performing brightness correction on the correctable region according to the brightness deviation coefficient; meanwhile, reconstructing the image after the brightness correction through a trained convolutional neural network model to obtain a large-field-of-view image with high marginal definition. Thus, the corrected image can have characteristics that the edge definition is high, the image is smooth, and the sense of reality is strong while a maximum field-of-view angle is kept.

The invention discloses an infrared video image and visible light video image fusion method, system and device, and relates to the technical field of image fusion, and the method comprises the steps: carrying out the image enhancement of an infrared video image, and obtaining an edge-sharpened infrared video image; performing image registration on the infrared video image and the visible light video image after edge sharpening, performing anisotropic filtering processing on the infrared video image and the visible light video image after registration, and obtaining an infrared video image feature part and a non-feature part and a visible light video image feature part and a non-feature part; performing principal component analysis on the feature part and the non-feature part to obtain a feature part fusion image and a non-feature part fusion image; and fusing the feature part fusion image and the non-feature part fusion image to obtain a fused image. According to the method, the definition of the finally obtained fused image can be improved.