87results about How to "Facilitate image acquisition" patented technology

The invention provides a constant volume combustion bomb. The constant volume combustion bomb comprises a bomb body which is internally provided with a cavity serving as a combustion cavity and is in the shape of a cube. The bomb body has six working surfaces serving as main mounting surfaces and auxiliary mounting surfaces formed at eight corners. The main mounting surfaces and the auxiliary mounting surfaces are provided with main mounting holes and auxiliary mounting holes. The constant volume combustion bomb further comprises a main mounting base accommodated in two opposite main mounting holes, a glass mounting base accommodated in another two opposite main mounting holes, a magnetic coupling fan accommodated in the last two opposite main mounting holes and used for driving mixed gas in the combustion cavity of the bomb body rotationally to make the mixed gas form a vortex, and auxiliary mounting bases accommodated in the auxiliary mounting holes to measure the pressure and temperature in the combustion cavity of the bomb body. The invention also provides the corresponding combustion system. The device has a structure adaptive to the combustion conditions of an internal combustion engine, allows comprehensive observation of a combustion process and thus is suitable for premixed combustion heating type constant volume bomb spray combustion diagnosis experiments with various research requirements.

A resonant power supply is provided. The resonant power supply comprises a series resonant converter configured to convert an input DC voltage to an output DC voltage to generate an output DC voltage. The series resonant converter includes a switching stage, a resonant inductor, a resonant capacitor, and an isolation transformer. The resonant power supply further comprises a converter controller configured to obtain an actual trajectory radius signal based on a resonant inductor current, a resonant capacitor voltage, and a voltage in association with the isolation transformer. The converter controller is further configured to generate a trajectory radius command signal based on a DC voltage command signal and a DC voltage feedback signal, and to generate control signals to be applied to the switching stage based on the actual trajectory radius signal and the trajectory radius command signal.

A system and method for automatically determining a seed vigor index for a lot of seeds by analysis of a scanned image of a plurality of seedlings grown from lot of seeds, including automatically separating and analyzing overlapped seedlings. According to one aspect of the current invention, seedling analysis software is used to analyze an image of seedlings. The seedling analysis software preferably analyzes both hypocotyl and radicle lengths and thus determines the separation point between the two for each seedling. The seedling analysis software also preferably separates overlapped seedlings, preferably using a simulated annealing technique. According to another aspect of the present invention, a low-cost scanner placed in an inverted configuration in a scanner enclosure is used to generate high-quality, reproducible images of seedlings. According to yet another aspect of the present invention, a method of using ordinary germination boxes, i.e., “sandwich boxes” is used to germinate seedlings that greatly facilitate computer-based analysis. In general, this method comprises placing germination blotter paper in the lid of a sandwich box and growing seedlings within the sandwich box in a nearly vertical (upright) position in a darkened germination chamber. The resulting seedlings produce hypocotyls that grow essentially upward and radicles that grow essentially downward, which greatly facilitates image acquisition of the entire seedling, e.g., with an inverted scanner.

In an embodiment, there is an apparatus for facilitating ultrasound medical image acquisition. There is a guide to help guide an ultrasound probe during a scanning operation. The guide resists at least some undesired movement of the ultrasound probe. The at least some undesired movement is otherwise possible, without the guide, under freehand probing. In another embodiment, there is a method for facilitating ultrasound image acquisition. The method includes providing a guide; guiding an ultrasound probe during a scanning operation using the guide, including resisting at least some undesired movement of the ultrasound probe; wherein the at least some undesired movement is otherwise possible, without the guide, under freehand probing. The guide and guiding are especially beneficial for three-dimensional or panoramic ultrasound imaging.

An image forming apparatus which can facilitate acquisition of an image output bundle that has a uniform and optimal gloss level as a whole. An image forming apparatus 10 fixes a toner image on a plurality of sheets. An image ratio calculation unit 233 calculates a composition ratio of image types in a plurality of pages of image data. A gloss level control unit 250 provides a control for uniformly fixing toner images formed on the plurality of pages to the plurality of sheet based on the calculation result by the image ratio calculation unit 233.

The invention discloses a method for judging the advertisement cost based on the statistics of the number of the elevator, which comprises the following steps: (1) judging whether the elevator is ascending and between the first floor and the second floor; (2) collecting images of the vertical ladder space; (3) analyzing and processing the collected images; (4) calcuating the number of passengers on the vertical ladder; (5) calculating the number of people watching advertisements on the vertical ladder. The invention also discloses a device for judging the advertisement cost based on the statistics of the number of the elevator, which comprises a detection unit for the status of the elevator, an image acquisition unit, an image analysis unit and a number of people statistics unit. The method of the invention is more reasonable than the traditional charging on time, and can achieve the effect of accurately placing advertisements.

The present invention discloses a mobile phone camera fixing device for an optical instrument. The device comprises a mobile phone fixing seat and a barrel clamp module for clamping and fixing the eyepiece barrel of the optical instrument. The barrel clamp module comprises a base, a clamp body and a clamp adjustment hand wheel. The clamp body is connected to the mobile phone fixing seat through the base. The axis of the clamp body is provided with an imaging hole. The clamp adjustment hand wheel movably sleeves the clamp head and is threadingly matched with the clamp body. The edge of the clamp body is hinged to a plurality of rotatable clamp rods, the tail ends of the clamp rods are in contact with the clamp adjustment hand wheel, and a torsion spring is arranged between the clamp rods and the clamp body. According to the mobile phone camera fixing device, a mobile phone can be used to realize optical instrument image shooting, and the device has the advantages of rapid and convenient image collection, convenient operation, low cost, and firm and stable barrel clamping.

The invention discloses a pineapple picking machine based on machine vision and a picking method. The pineapple picking machine comprises a rack, a chassis, a machine vision mechanism, a movement mechanism, a pneumatic mechanism, a picking mechanism, a transportation mechanism and a control box, wherein the rack and the control box are arranged above the chassis; the machine vision mechanism, themovement mechanism and the transportation mechanism are arranged on the rack; the chassis, the machine vision mechanism, the movement mechanism, the pneumatic mechanism and the transportation mechanism are connected with the control box respectively; the picking mechanism is arranged on the movement mechanism and is connected with the pneumatic mechanism; the movement mechanism is used for controlling the picking mechanism to move; the pneumatic mechanism is used for controlling the picking mechanism to clamp or release pineapples; and the transportation mechanism is used for transporting thepineapples picked by the picking mechanism. Aiming at a planting manner of the pineapples and economic values of the pineapples except fruits, the pineapple picking machine disclosed by the inventionis used for efficiently picking the pineapples through accurate positioning and a picking mechanical arm, and meanwhile, the integrity of plants is also effectively protected.

The invention pertains to the technical field of material testing, in particular to a metallic film specimen and its preparing method for evaluating and screening the stored materials in a museum. The invention uses modern and mature film-coating technology to coat silver and copper particle film in thickness of 100-300nm on surfaces of different substrates, so as to get the desired metallic film specimen. The invention can greatly reduce the use of metallic material, simplify operation and reduce cost; can avoid the shortcoming of poor repeatability of experimental data due to bulk metallic specimen, is good for digital analysis on the difference in specimen before and after corrosion, and overcomes any artificial error brought about by Oddy Test due to observation by naked eyes, and can greatly reduce the test period, is good for popularization and application in great scale.

The invention discloses an asphalt stirring tower and a method which are capable of preventing hot material bin material overflow. The asphalt stirring tower capable of preventing hot material bin material overflow comprises an aggregate feeding device, an aggregate conveying device, a visual inspection device, a drying device, a hot material bin, and a control device; the aggregate feeding deviceis used for storing aggregates of different grades; the aggregate conveying device comprises a first aggregate belt and a second aggregate belt; an input end of the second aggregate belt is arrangedbelow an output end of the first aggregate belt; the visual inspection device is used for collecting of real-time image information of aggregate falling from the first aggregate belt onto the second aggregate belt, and feedback to the control device; the control device is connected with the aggregate feeding device; preset consuming values of aggregates of different grades are recorded in the control device; the control device is used for analysis the feedback image information from the visual inspection device so as to obtain the real-time discharge amounts of aggregates of different grades,and the discharge amounts of a plurality of aggregate bins are controlled through combination with the preset consumption values of the aggregates of different grades, so that hot material bin material overflow is prevented.

Disclosed herein are systems and methods of calibrating a microscope or an imaging system prior to acquiring image data of a sample. In some embodiments, a method is disclosed including the steps of (a) running a power output calibration module to calibrate an imaging apparatus for repeatability; (b) running an image intensity calibration module to calibrate the imaging apparatus for reproducibility and to mitigate differences in detection efficiency between channels; (c) collecting image data from a microscope or imaging system; (d) optionally running an unmixing module to unmix the collected image data into individual image channel images; and (e) optionally running a contrast agent intensity correction module to calibrate for differences in brightness between different contrast agents.

The invention provides a polarization imaging device and a polarization imaging method of the polarization imaging device. The polarization imaging device comprises a liquid crystal lens and an imagesensor which are arranged oppositely. The liquid crystal lens comprises at least three liquid crystal layers which are parallel to one another and alignment layers and electrode layers matching the liquid crystal layers, wherein each liquid crystal layer is corresponding to the alignment angle of one alignment layer and the alignment angles are different from one another. The liquid crystal lens also comprises a voltage drive circuit which independently controls drive voltage applied to each liquid crystal layer. When the voltage drive circuit applies drive voltage to each layer of the liquidcrystal lens, the focal lengths of the liquid crystal lens units formed by the liquid crystal layers are the same. The device is provided with multiple liquid crystal layers and a polarizing film anda drive structure for adjusting the polarization direction of the polarizing film are not needed, so that the problem that the structure of a polarization imaging device in the prior art is not compact enough is solved.

The application discloses a focusing method and apparatus, and a shooting device. The focusing method comprises the following steps: controlling deformation of an image sensor so that reference points in at least two imaging sub-zones of the deformed image sensor form a first relative position relation of staggered distribution along the depth direction; obtaining contrast data of sampling images of a to-be-shot object in the at least two imaging sub-zones; and determining and/or adjusting the focusing state of the image sensor at least according to the first relative position relation and the contrast data. Through the application, the speed and/or precision of determining and/or adjusting the focusing state of the image sensor can be improved.

The invention provides a vertical type all-in-one machine with a front-mounted camera and a control method thereof. The vertical type all-in-one machine with the front-mounted camera comprises a shell body, a host box and a display screen, wherein a host is arranged at the bottom of the shell body; the display screen is mounted on a front surface of the shell body; the display screen is a touch screen; a camera is arranged on the front surface of the shell body; the host is arranged in the host box and the host is connected with the camera and the display screen respectively. According to the vertical type all-in-one machine, the camera is mounted on a top wall and can be used for collecting a real-time scene at a front part of the machine and man-machine interaction can be realized, so that requirements on specific scenes including advertising display, marketing promotion, interactive entertainment and the like are met, and the effect of enhancing reality is realized; virtuality and reality are combined to bring brand-new visual experience to a user; the user can also carry out image acquisition on secondhand books through the camera, and transmit acquired images to the host, so that a function of recycling the secondhand books is realized; furthermore, the vertical type all-in-one machine also has image acquisition and information processing functions.

The invention discloses a method for rapidly identifying Atlantic salmons and rainbow trout based on machine vision and belongs to the meat product quality detection technology field. The method comprises the following steps of preparing samples of the Atlantic salmons and the rainbow trout, and shooting and collecting sample images through using a mobile phone; inputting the obtained images intoa computer and carrying out image processing; carrying out characteristic data extraction on the processed images; using a principal component analysis method to carry out dimension reduction processing on the extracted characteristic data; using a chemometrics method to establish a rapid identification model of the Atlantic salmons and the rainbow trout; and carrying out image collection on unknown fish samples to be tested, and using the established identification model to identify a category of the unknown fish samples to be tested. By using a detection method in the invention, operation isconvenient, the samples are not destroyed, a detection speed is fast and a result is objective and accurate. By using the method, the Atlantic salmons and the rainbow trout are identified. When a principal component number is 6, identification rates of an established LDA model training set and a test set can reach 100% so that rapid identification is achieved.

The invention discloses a tank body surface detecting device with a multilevel angle adjusting function, and relates to the technical field of tank body detection. The tank body surface detecting device comprises a detecting platform, a limiting and fixing mechanism and an aperture detecting mechanism, wherein side plates are fixed on both sides above the detecting platform, a rotating mechanism is installed above the middle of the detecting platform, the inner side of the rotating mechanism comprises a rotating bottom plate, a rotating shaft and a motor, the rotating shaft is fixed at the middle of the bottom of the rotating bottom plate, the motor is installed below the rotating shaft, the limiting and fixing mechanism is arranged above the rotating bottom plate, a tank body is arrangedin the limiting and fixing mechanism, a light sensor is arranged in the tank body, a sealing cover is fixed above the tank body, a top plate is fixed above the side plates, and the top plate is riveted with the side plates. The tank body surface detecting device disclosed by the invention has the beneficial effects that the device can conveniently fix the bottom of the tank body via the limiting and fixing mechanism, thereby avoiding the movement of the tank body in a detection process.

The invention provides a cloud platform based intelligent piano teaching system and method. The system comprises a piano body, a weighted keyboard, pedals, a main control panel, a touch screen, cameras and a computer keyboard; the main control panel comprises a power interface supplying power to the main control panel, a power switch controlling ON/OFF of a power supply, a microprocessor, a poweramplifier chip, a loudspeaker, a main control chip, a data collection chip and a communication chip; the touch screen is arranged on the piano body; the weighted keyboard and the pedal are electrically connected with the main control chip, and the keyboard and pedals are connected with the power interface; the cameras included a hidden camera as well as a movable camera arranged in the upper portion of the piano body, and the hidden camera and movable camera are in communication connection with the main control chip. According to the intelligent piano, the internal chips can be expanded, and multiple pianos can be used together by means of networking to realize remote teaching.

The invention discloses a control method and system for a C-shaped arm of a digital substraction angiography (DSA) machine. The method comprises: A, receiving a user controlled DSA machine motion instruction, and acquiring a C-shaped arm rotation angle value, a C-shaped arm regulation angle value and a base rotation angle value of the current DSA machine; B, respectively obtaining a left/right forward slanting locus equation and a head/foot locus equation according to the conversion between predefined coordinate systems, and solving locus data by utilizing the acquired current angle values; and C, controlling a C-shaped arm rotation shaft and a C-shaped arm angle regulation shaft to move sequentially and synchronously according to the obtained locus data. By adopting the system, the position angle motion loci of the DSA machine when an ISO center is not on a Pivot shaft can be accurately calculated, so that the motion control system of the DSA machine can accurately control the C-shaped arm to move according to the loci defined by left/right forward slanting and head/foot position angles, to facilitate image acquisition and physician's operation.

The device which comprises communication interface circuit, single-chip computer circuit, lamp light control circuit, video switching circuit, watchdog circuit, control decoding circuit and power supply circuit is featured as the follows, communication interface circuit receives control command from computer and to send it to single-chip computer circuit which analyses command and then to send signal to lamp light control circuit and video switching circuit as off and on of lamp is controlled and certain camera is gated to carry out shooting to target object at various angles with different light combination.