65results about How to "Achieving Auto Focus" patented technology

The invention discloses a method for synchronizing focusing operation and zooming operation. The method for synchronizing the focusing operation and the zooming operation is used for solving the problem that in the prior art, after the shooting object distance is changed due to scene changes, images are fuzzy to a great extent in the zooming process and after the zooming process is accomplished. The method for synchronizing the focusing operation and the zooming operation comprises the steps that in the zooming process, a switching mode for switching zooming tracking curves and a zooming tracking curve are determined, wherein the next cycle of rotation of a zooming motor and a focusing motor is driven according to the zooming tracking curve; the zooming tracking curves are switched, and the zooming motor and the focusing motor are driven to synchronously rotate according to the changed zooming tracking curve. Automatic focusing can be achieved in the zooming process, the situation that after multiplying power of an image is zoomed to form high multiplying power, the image is in a fuzzy state so that the focusing direction of automatic focusing operation cannot be easily judged is avoided, the difficulty of automatic focusing operation is reduced, and the focusing speed is increased.

The invention relates to a method for automatically focusing a microscope system in urinary sediment examination equipment, belonging to method for processing the image of the microscope system. Firstly, the image of focusing liquid passing by a flow cell in a laminar flow way at high speed is shot, and then the image of the focusing liquid is analyzed to find the optimal focusing position and automatically focus the microscope system in the urinary sediment examination equipment. Aiming at solving the practical problem of automatically focusing the microscope system in the urinary sediment examination equipment, the invention provides a novel method for automatically focusing the microscope system in the urinary sediment examination equipment. The novel method can accurately focus the microscope system in urinary sediment examination equipment and has good repeatability. The invention provides the method for calculating the evaluation function of the definition of the image in each position on the basis of calculating the definition of the focusing particles in the focusing liquid, thereby better meeting the requirement of the evaluation function of the definition of the image and making the focusing judgment more accurate.

The invention discloses a micro-operation device for automatically screening Caenorhabditis elegans. The micro-operation device comprises a platform base, a three-axis automatic platform, an optical vision system, an automatic focusing device, an operation arm fine-adjusting device, and an automatic telescopic device of an end manipulator; the three-axis automatic platform, the optical vision system and the operation arm fine-adjusting device are fixedly installed at corresponding positions on the platform base; the automatic focusing device is fixedly arranged on the optical vision system; and the automatic telescopic device of the end manipulator is fixedly arranged on the operation arm fine-adjusting device. The micro-operation device is mainly used for the micro-operations such as screening, sorting and the like to the microorganism such as Caenorhabditis elegans and the like; a control mode of micro-vision servo can realize automatic focusing of the target microorganism and achieve the object of micro-operation by utilizing the end manipulator; and in the invention, all motions are realized automatically under the control of a control system of an industrial control machine, and the whole device has compact structure and convenient operation.

The invention relates to a lens assembly capable of realizing automatic focusing by adopting a fixed focus lens. The lens assembly comprises a main board chip, a lens mounting seat, a lens fixing sleeve, the fixed focus lens, an adjustable ring and an automatic focusing control motor, wherein a radial outwardly-extended guiding nail is arranged on the outer peripheral wall of the fixed focus lens; a guiding sliding groove, matched with the guiding nail in a guiding manner, is formed in the inner peripheral wall of the adjustable ring; a run-through groove is formed in the sleeve wall of the lens fixing sleeve; the automatic focusing control motor is connected with the adjustable ring through a transmission apparatus; the main board chip has an automatic focusing control function; and a control line and a power line of the automatic focusing control motor are connected with an automatic focusing control interface in the main board chip. According to the lens assembly, factors of distance changes, day and night co-focusing, temperature drift and the like of a shot object are not needed to be taken into consideration in lens design, so that the design difficulty and cost of the lens are lowered; in addition, automatic focusing can be realized through the moving of the fixed focus lens in distance changes, day and night switching and high temperature and low temperature changes of the shot object, so as to obtain a clear image.

The invention discloses an automatic focusing method for a laser night vision device. The method comprises the following steps of: A, judging the using environment of an imaging part; B, determining the used light source according to the using environment; C, reading zoom position information of an imaging lens; D, compensating the focusing value of the lens according to different zoom positions of the lens by a control panel; and E, matching the focusing value and the zoom value to finish automatic focusing of the lens. The problems that focusing is performed by manual intervention during day and night conversion and the focusing is not clear are solved. The repeated operation of frequent focusing during night monitoring of a night vision system is reduced, the same presetting bit can be adopted in the daytime and at night, and the day and night presetting bit is not needed to be set repeatedly.

The invention relates to a digital microscope and a focusing method thereof. According to the digital microscope and the focusing method thereof of the invention, a focusing lens group, a zoom lens group and corresponding control circuits are integrated in a microscope; a main control unit in the microscope executes a focusing search algorithm and a focusing tracking algorithm so as to control the focusing lens group and the zoom lens group to move; and the microscope is made to realize automatic focusing through adjusting an image distance; and the microscope is made to realize zoom through changing a focal length. With the digital microscope and the focusing method thereof of the invention adopted, automatic focusing can be realized without moving an object stage and the microscope, and focusing efficiency is improved, and focusing time is shortened; and a zoom tracking algorithm is adopted, so that continuous zoom and tracking can be realized, and images are clear in a whole zoom process. According to the digital microscope and the focusing method thereof of the invention, an exposure algorithm is executed through the main control unit, and the brightness of an auxiliary light source at the front end of the microscope can be automatically adjusted through the change of luminous flux, and therefore, uniform exposure can be realized.

The invention relates to a large-zoom ratio automatic focusing integrated camera, which belongs to the field of optical, mechanical and electronic integration. The camera comprises an automatic focusing system, a video drive system and a shell thereof. The camera adopts a contrast detection method to carry out automatic focusing, and a processor (108) of the automatic focusing system is utilized to send out control signals to acquire, process, calculate and compare image signals and processing signals to control a step motor (111) to drive a compensation assembly (G4) to move to a focusing position, so that the camera is automatically focused. The automatic focusing of the camera does not need an auxiliary light source, and cannot be affected by the distance of an object, the focusing process is controlled by the microprocessor, the time is short, the camera also has the function of video drive, and can automatically adjust an aperture according to environments, so the camera can be accurately, quickly and automatically focused under various environments, while the image cannot be distorted, and the camera can be widely applied to fields, such as expressways, air ports, finance, military, ports and the like.

The invention discloses an automatic focusing method for decomposition projection. The method comprises the steps: obtaining original data in the whole synthetic aperture time, and dividing the original data into N sub-aperture data; performing focusing imaging processing on each sub-aperture data to obtain a first sub-image; registering the first sub-image in a ground virtual polar coordinate system to obtain registered image data; and performing error correction and sub-image fusion on the registered image data by adopting a fast coordinate descent method to obtain second sub-image data, andoutputting a focusing imaging result if the second sub-image data is a sub-image. According to the invention, the PGA algorithm is applied to the ground virtual polar coordinate system, so that the problem that a traditional frequency domain method is incompatible with a time domain method is solved, automatic focusing in the FFBP algorithm is achieved, and the focusing precision of the sub-aperture images is effectively improved; and the residual phase error model of the sub-images is established, the method is suitable for an unstable strip mode of a radar platform, the error estimation precision is improved, and the calculation complexity is reduced.

The invention provides an optical fiber automatic focusing method and an automatic focusing system for laser processing. The optical fiber automatic focusing method is used for performing automatic focusing by comprises the following steps of image acquisition, specifically, acquiring an image of a to-be-processed optical fiber; processing the image to obtain an image edge; obtaining the edge of a fiber core, specifically, performing non-maximum suppression processing and discrete edge connection processing on the image edge to obtain fine upper and lower edges of the fiber core; offset calculation, specifically, calculating the offset according to the upper and lower edges of the fiber core; and offset compensation, specifically, performing compensation according to the information of the offset, so that enabling the laser to be focused at the target position on the optical fiber. According to the optical fiber automatic focusing method and the optical fiber automatic focusing system for the laser processing, automatic optical fiber focusing can be achieved, and the laser is focused at the target position on the optical fiber, the positioning precision is high, the focusing speed is high, and different types of optical fibers can be processed.

The invention discloses a camera auto focus and zoom device. The device is arranged on a camera lens, can automatically adjust the lens focal length and object distance through a computer or a remote terminal, and feeds back lens focus and zoom information. The device comprises a base, a camera auto focus device. The base is fixed on the camera lens. The camera auto focus device is fixed on the base, and comprises a fixation plate, an encoder, a servo motor, a large gear and a pinion. The fixation plate is used for fixing the camera focus device on the base. The servo motor and the encoder are fixed on the fixation plate. The pinion is arranged on the shaft end of the servo motor. The pinion and the large gear are meshed. The large gear and a focusing ring gear on the lens are meshed. According to the invention, the device automatically adjusts focusing and zooming of a camera through the computer or the remote terminal, and accurately acquires focus and zoom information of the lens through the encoder when the focal length and the object distance are changed.

The invention relates to a camera module which comprises a driving device, a lens unit, a supporting unit and an imaging unit. The driving device comprises at least one driver, each driver comprises driving components and a connecting part, the lens unit is arranged in the supporting unit, the supporting unit is arranged on the imaging unit and comprises an upper support and a lower support, and an elastic part is arranged between the lens unit and the upper support. The driving device is arranged between the two opposite side faces of the lens unit and the supporting unit and connected with the lens unit and the supporting unit and can generate driving force to drive the lens unit to do linear motion to achieve focusing of the camera module. According to the camera module, the problems that in the prior art, the thickness of a driving module is limited, the driving stroke is short, and the stability is poor are solved.

The invention discloses a focusing method, which comprises the steps of if it is detected that a scene picture is changed, determining a change interval corresponding to the scene picture; calculatinga central distance between the change interval and the scene picture on a preset time axis, and determining a change trend of the change interval based on the central distance; and determining a corresponding focusing strategy based on the change interval and the change trend, and moving a focus for focusing based on the focusing strategy. The invention further discloses a focusing device and equipment and a computer readable storage medium. According to the invention, after the change of the scene picture is detected, the focusing strategy is determined by determining the change interval andthe change trend of the change interval, and the rapid automatic focusing is realized by combining an evaluation value.

The invention relates to the field of image identification, and provides an identification method, an identification system and application thereof for edges of a subject matter in an image. The identification method comprises the steps of: A, carrying out similarity matching on a template array and all regions to be matched in an image to be tested by using an image matching method, and assigning similarity values to pixels in the corresponding regions to be matched so as to obtain a similarity value image; B, filtering the similarity value image by utilizing a similarity threshold value, so as to obtain a filtered image; C, and determining the point with the maximum similarity value in the first region, and regarding the region to be matched corresponding to the point with the maximum similarity value as a subject matter region in the image to be tested, wherein the first region is a continuous similarity value region in the filtered image. The method and the system provided by the invention can precisely identify the region in which the subject matter in the image is positioned, especially when the image to be tested contains a plurality of articles in different shapes.

The invention relates to the field of image shooting, and provides an automatic focusing method and system. The automatic focusing method comprises the steps of shooting, that is, controlling an imaging device to shoot a sequencing reaction region at different focusing positions to obtain a plurality of sequencing images; acquiring the optimum focusing position, that is, respectively recognizing an area value of all magnetic beads in a first region of the plurality of sequencing images by using a magnetic bead recognition threshold, and determining the optimum focusing position based on the area value of all magnetic beads in the first region of the plurality of sequencing images; and focusing, that is, moving the imaging device to the optimum focusing position. Automatic focusing can be realized quickly and efficiently according to the method and system provided by the invention.

The invention provides an automatic focusing system for laser manufacturing. The automatic focusing system comprises a mounting platform, an optical module, an image acquisition module, a precise position adjusting module, an image processing module, a communication module and a motion control module, wherein the image acquisition system acquires a light spot image of the laser on a machining surface, the image is processed by the image processing module, and automatic laser focusing is completed by the motion control module; the precise position adjusting module can finely adjust the positionof the image acquisition module, so that light spots can be conveniently captured in a visual field; and through reasonable design of the optical module, automatic focusing and real-time monitoring of laser spots can be realized while processing is carried out. The automatic focusing system can realize automatic focusing of a desktop-level high-precision laser micro-nano manufacturing device at the machining surface, has the advantages of being low in cost, high in motion precision, large in adjusting range, high in flexibility, modular in structure, wide in application range and the like, has high application value and can be widely applied to the focusing process in laser manufacturing.

The invention discloses an automatic focusing processing method of a piece of photographic equipment. The method comprises following steps of a, obtaining an object distance interval according to an initial zooming multiple and an initial focusing location in combination of at least two pre-stored zooming tracking curves; b, obtaining stored preset data information from a storage unit through the obtained object distance interval; obtaining the range data information of a focusing location; c, processing a mapping relation of the object distance interval obtained in the step a and the data information obtained in the step b, thus obtaining processed data; and d, comparing the processed data in the step c with the initial data, thus obtaining a current focusing location, thus realizing automatic focusing. The method provided by the invention has the advantages that the object distance interval is obtained by adopting a mode of combining the initial zooming multiple and the initial focusing location; the data are obtained through processing the mapping relation; the automatic focusing is realized; and the method is simple and reliable and has convenient and fast operation and high stability.

A pulse optical fiber laser marking system comprises a master control part (10), a galvanometer module (23), a field lens module (24), a position detection module (21) and a drive module (22). The position detection module detects the distance from the surface of a workpiece to be marked as a detection point in real time. The master control part calculates displacement information about the galvanometer module and the field lens module needing to move according to the detection result, and generates a drive signal according to the displacement information. The master control part also produces a galvanometer control signal and a focusing control signal. The drive module drives the galvanometer module and the field lens module to move according to the drive signal. The galvanometer module controls a laser beam to deflect according to the galvanometer control signal. The field lens module focuses the deflected laser beam on the surface of the workpiece to be marked according to the focusing control signal.

The invention relates to a real-time automatic laser focusing device and method. The device comprises an optical module, an image acquisition module, an image processing module and a motion control module. Reflected light is divided into two beams, the sizes of light spots, at the same position, of the two beams of reflected light are made to be different by means of different optical paths, the laser focusing state is judged by means of the difference value of the diameters or the areas of the two light spots, and accordingly the Z-axis motion platform is controlled to achieve automatic focusing. The device has the advantages of being high in focusing precision, fast in response, large in adjustment range, adjustable in focusing precision and the like, is simple, is wide in application range, and can achieve a fast and real-time focusing function in laser focusing application.

The invention relates to the field of image photographing, and provides an automatic focusing method and system. The method comprises a photographing step: controlling an imaging device carry out thephotographing of a sequencing reaction region at different focusing positions, and obtaining a plurality of sequencing images; an optimal focusing position obtaining step: respectively obtaining magnetic bead recognition threshold values of the plurality of sequencing images through an adaptive method, and determining that the focusing position corresponding to the sequencing image corresponding to the magnetic bead recognition threshold value in a preset range in the magnetic bead recognition threshold values of the plurality of sequencing images as the optimal focusing position; a focusing step: moving the imaging device to the optimal focusing position. The method and system can quickly and efficiently achieve the automatic focusing.