105 results about "Compound imaging" patented technology

A display apparatus 10 has a display screen 11 comprised of plurality of pixels displaying images based on image data, light sensors 14 to detect light entering the display screen 11 and arranged with display elements 13 to form the pixels, and compound imaging systems 20 comprised of imaging lenses 211 forming images of a subject in the light-receiving part of the light sensors 14. Images of a subject are output from the plurality of light sensors 14, and a signal processing circuit 35 synthesizes the image signals to generate image data. The image displayed by the display screen 11 is based on the image data output by the signal processing circuit 35.

Virtual displays with micro-display engines are arranged in compact, lightweight configurations that generate clear virtual images for an observer. The displays are particularly suitable for portable devices, such as head-mounted displays adapted to non-immersive or immersive applications. The non-immersive applications feature reflective optics moved out of the direct line of sight of the observer and provide for differentially modifying the amount or form of ambient light admitted from the forward environment with respect to image light magnified within the display. Micro-display engines suitable for both non-immersive and immersive display applications and having LCD image sources displace polarization components of the LCD image sources along the optical paths of the engines for simplifying engine design. A compound imaging system for micro-display engines features the use of reflectors in sequence to expand upon the imaging possibilities of the new micro-display engines. Polarization management also provides for differentially regulating the transmission of ambient light with respect to image light and for participating in the image formation function of the image source.

Certain embodiments include a system and method for improved compound imaging using a plurality of imaging modes. In an embodiment, a plurality of echo signals are received in response to a plurality of beams formed based on different imaging modes corresponding to different steering angles, such as steered or non-steered angles. The plurality of echo signals is compounded to form a compound image. In an embodiment, the imaging mode includes at least one of harmonic, fundamental, coded harmonic, and variable frequency imaging. Parameters may be generated for the plurality of beams formed based on different imaging modes corresponding to different steering angles. Additionally, the parameters may be stored. The echo signals may be filtered. Imaging mode may be controlled based on steering angle. Employing different imaging modes based on steering angles for spatial compound imaging helps reduce grating lobe artifacts while improving speckle reduction effect.

A compound multi-aperture imaging system includes multiple multi-aperture imaging systems, preferably with overlapping fields of view. In one aspect, each multi-aperture imaging system includes an optical imaging system with two apertures, for example an aperture for the visible wavelength region and a smaller aperture for the infrared wavelength region. An image sensor captures both visible and infrared images. These can be processed to obtain depth information. The visible images can also be stitched together to produce a larger composite image.

Method and apparatus for displaying an enhanced image based on an image plane of data. A volume data set is acquired, and a plane is defined on an image based on the volume data set. The plane may be a C-plane. Data within the volume data set which is defined by the plane is processed with an image enhancing technique and the resultant enhanced image is displayed.

The present invention provides a method and device for spatial compound imaging. The method comprises steps of receiving a component image C(i, j), where i denotes a steering scan cycle, and j a steering angle of the component image; computing a differential image by subtracting a component image C(i-1,j) from the component image C(i, j) with the same steering angle from a previous steering scan cycle; pre-processing said differential image; compounding the pre-processed differential image and a previous compounded image to form a new compounded image.

Certain embodiments of the present invention provide a method and system for real-time motion correction in compound ultrasound imaging. Certain embodiments include receiving an image frame, estimating motion between the image frame and a previous image frame, updating a previous motion estimate with the estimated motion to form an updated motion estimate, and correcting the image frame and the previous image frame using the updated motion estimate. The method may also include forming a compound image from the image frames. In an embodiment, motion may be estimated between the image frame and a previous frame using cross correlation, reference point registration, and / or other estimation method, for example. The image frame and the previous image frame may be corrected using the updated motion estimate in an affine transformation or other correction method, for example. In an embodiment, the method provides real-time correction as image frames are being received.

Virtual displays with micro-display engines are arranged in compact, lightweight configurations that generate clear virtual images for an observer. The displays are particularly suitable for portable devices, such as head-mounted displays adapted to non-immersive or immersive applications. The non-immersive applications feature reflective optics moved out of the direct line of sight of the observer and provide for differentially modifying the amount or form of ambient light admitted from the forward environment with respect to image light magnified within the display. Micro-display engines suitable for both non-immersive and immersive display applications and having LCD image sources displace polarization components of the LCD image sources along the optical paths of the engines for simplifying engine design. A compound imaging system for micro-display engines features the use of reflectors in sequence to expand upon the imaging possibilities of the new micro-display engines. Polarization management also provides for differentially regulating the transmission of ambient light with respect to image light and for participating in the image formation function of the image source.

A medical imaging and therapy applicator is provided that may include any of a number of features. One feature of the medical imaging and therapy applicator is that it can image target tissue of a patient with ultrasound imaging transducers. Another feature of the medical imaging and therapy applicator is that it can display the imaging information and provide therapeutic energy to the target tissue. Methods associated with use of the medical imaging and therapy applicator are also covered.

The invention discloses a method and a device for ultrasonic image space compound imaging. The method comprises the following steps of: receiving ultrasonic echo signals with different deflection angles; performing image space compound imaging for the ultrasonic echo signals with different deflection angles; calculating the variance of the image data after the present compound imaging with the image data after the previous compound imaging, and then getting the absolute value, so as to obtain the variance image data, comparing the variance image data with a preset variance threshold, and judging whether the image data with a high motion attribute exists in the image data after the present compound imaging; and determining the output mode of the image data according to whether the image data with a high motion attribute exists in the image data after the present compound imaging. In the technical scheme of the invention, different image processing modes can be chosen according to the judged image motion attribute by judging the image data with a high motion attribute; and speckle noise, sound shadow and reverberation in an ultrasonic image can be effectively reduced, thus improving the definition of the image.

The invention discloses a method and a device for compounding imaging by supersonic frequency, wherein the method comprises the steps of emission, segistration, non-linear processing and accumulating. On the basis of multiple impulse transmission harmonic imaging, the method carries out non-linear processing on multi pulse echo, so the original fundamental frequency component is modulated within the frequency band of the harmonic frequency component and one-time detection for harmonic frequency component can achieve the frequency compounding imaging of fundamental wave and the harmonics. On the premise of basically not losing the image quality, the method reduces the realization complexity of a circuit and the cost.

Certain embodiments include a system and method for improved compound imaging using a plurality of imaging modes. In an embodiment, a plurality of echo signals are received in response to a plurality of beams formed based on different imaging modes corresponding to different steering angles, such as steered or non-steered angles. The plurality of echo signals is compounded to form a compound image. In an embodiment, the imaging mode includes at least one of harmonic, fundamental, coded harmonic, and variable frequency imaging. Parameters may be generated for the plurality of beams formed based on different imaging modes corresponding to different steering angles. Additionally, the parameters may be stored. The echo signals may be filtered. Imaging mode may be controlled based on steering angle. Employing different imaging modes based on steering angles for spatial compound imaging helps reduce grating lobe artifacts while improving speckle reduction effect.

The invention provides a three-dimensional wide-beam small-region rapid cavitating and imaging method of an ultrasonic two-dimensional planar array. According to the three-dimensional wide-beam small-region rapid cavitating and imaging method, a linear scanning way adopted by the conventional ultrasonic imaging technology is abandoned, but a single-time three-dimensional wide-beam imaging method is used, so that problems, existing in imaging of transient physical information, of time asynchrony and motion blur can be solved, and the imaging frame rate can reach 5kHz; furthermore, in allusion to the problem that single-transmission three-dimensional wide-beam rapid imaging signal-to-noise ratio is low, a multi-angle continuous three-dimensional wide beam is used for composite imaging, 5 spatial continuous different-angle three-dimensional wide beam transmissions, as an example, are used for cavitating composite imaging, and the imaging frame rate can still reach 1kHz.

Methods and apparatus for achieving a compound ultrasound imaging mode are disclosed. The methods include a step of firing a plurality of ultrasound beams at a single location, receiving first and second echoes, and combining the first and second echoes to form a composite scan line. The following beam parameters may be varied: transmission focus depth, transmission aperture, transmission frequency, and transmission burst length. Echoes may vary in one or both of receive bandwidth and receive center frequency. In one embodiment, transmission focus depth, transmission aperture, and receive center frequency all differ between the beams. A weighting step may be performed before or after the summing step. The apparatus may include vector memory, a compound logic processor for weighting and summing the vectors, and memory for storing the summed vectors.

The invention discloses an infrared / laser / microwave / millimeter wave common-caliber beam forming apparatus, relates to a beam forming apparatus, and belongs to the intersection field of optics and microwave technology. The apparatus comprises an infrared / laser reflection plane, a support flat plate, an air layer and adjusting mechanisms. The infrared / laser reflection plane is formed by splicing multiple sub-sheets. The supporting flat plate is formed by splicing multiple sub-plates. The adjusting mechanism is used for fixing and supporting the sub-sheets, and realizes horizontal, vertical and longitudinal adjustment of the sub-sheets. Infrared / laser reflection surfaces of the sub-sheets are guaranteed to be on the same plane by adjusting the face type of the infrared / laser reflection plane with the adjustment of the adjusting mechanisms, and further fine tuning of the thickness of the air layer can be performed by the longitudinal adjustment of the adjusting mechanisms, and thus permeation frequency bands of the microwave / millimeter wave can be under fine tuning. The adjusting mechanisms have a locking function after the completion of the adjustment. The infrared / laser / microwave / millimeter wave common-caliber beam forming apparatus is mainly applied to an infrared / laser / microwave (millimeter wave) composite imaging detection guidance semi-physical simulation system.

The invention provides a device and a method for detecting co-optical system and co-detector glimmer passive and laser active compound imaging, belonging to the field of imaging radar detecting devices and solving the problems of low integration level, complicated information fusion and low fusion level of the traditional active and passive compound imaging device. Light emitted by an optical system of the device can be focused on a photocathode of a stripe tube detector, a coupling lens receives the light emitted from a fluorescent screen of the stripe tube detector, and then the light is shot by a CCD (Charge Coupled Device) camera. The method is realized by the detecting device based on the co-optical system and co-detector glimmer passive and laser active compound imaging and comprises the following steps of: firstly making a laser not emit light to obtain a glimmer passive image of a target; secondly, making the laser emit the light to obtain a laser active four-dimensional imageof the target; and thirdly, compounding the glimmer passive image and the laser active four-dimensional image to acquire a co-optical system and co-detector information fusion image. The invention issuitable for the field of glimmer passive and laser active compound imaging.

Certain embodiments of the present invention provide a method and system for real-time motion correction in compound ultrasound imaging. Certain embodiments include receiving an image frame, estimating motion between the image frame and a previous image frame, updating a previous motion estimate with the estimated motion to form an updated motion estimate, and correcting the image frame and the previous image frame using the updated motion estimate. The method may also include forming a compound image from the image frames. In an embodiment, motion may be estimated between the image frame and a previous frame using cross correlation, reference point registration, and / or other estimation method, for example. The image frame and the previous image frame may be corrected using the updated motion estimate in an affine transformation or other correction method, for example. In an embodiment, the method provides real-time correction as image frames are being received.

The invention discloses a transcranial three-dimensional cerebrovascular compound imaging method and system. The method comprises the steps that firstly, an annular array probe capable of performing automatic scanning is utilized to send ultrasonic signals with different time delays to intracranial different scanning positions, so that the ultrasonic signals are focused on preset depths of the beam axial direction to detect the intracranial cerebral vessels through the focused ultrasonic signals and perform digital delay focusing on received echo signals to enhance the echo signals to improvethe spatial form, and positional accuracy of acquired cerebral vessels, thereby improving the definition and detection rate of three-dimensional cerebrovascular images. In addition, the three-dimensional cerebrovascular images are acquired from different detection positions, according to the three-dimensional cerebrovascular images, intracranial cerebral vessels are compounded from multiple angles, thereby further improving the definition of the three-dimensional cerebrovascular images. The annular array probe has the characteristics of small size and low frequency, so that the annular array probe can be worn on the head conveniently, and three-dimensional scanning and long-time monitoring of the intracranial cerebral vessels can be achieved.

A system and method for range dependent weighting in ultrasound imaging. The system includes a transducer array, a data acquisition system, and an imaging processor. The transducer array receives a first ultrasound beam having a first focal depth. The data acquisition system receives a first ultrasound imaging signal from the array. The first signal includes first image data based on at least the first ultrasound beam. The imaging processor combines a first data contribution from the first image data with at least second image data from a second ultrasound imaging signal to create a spatially compounded image. The first data contribution is based on at least the focal depth of the first beam.

The invention discloses a space compound imaging method in ultrasonic diagnosis. The method has the following advantages: window function processing is carried out on wave beam signals in transmitting and receiving channels during ultrasonic scanning in N directions respectively, then the obtained initial ultrasonic image data in N directions are processed through a histogram equalization algorithm or matching algorithm, and then space compound imaging is carried out on the processed ultrasonic image data to obtain the final ultrasonic image; the technicians in the field need to carry out debugging; and appropriate window function processing is selected, thus enhancing the wave beam signal intensity of the diagnosed part in the target tissue, and an appropriate histogram equalization algorithm or matching algorithm is conductive to further elevating the image data on the diagnosed part and enhancing the information of the diagnosed part in the final ultrasonic image, so the contrast resolution of the final ultrasonic image and hierarchy of the tissue structure are better and more useful information of the diagnosed part is displayed.

The invention discloses a high-resolution multiband optical composite imaging detecting system and a method thereof, wherein the system comprises a front telescope module, a phase correcting and imagemotion compensating module and a sensor imaging module, wherein the front telescope module acquires an objective optical signal, compresses a light beam caliber and transmits the objective optical signal to the phase correcting and image motion compensating module. The phase correcting and image motion compensating module performs phase correction and image motion compensation on the objective optical signal after light beam caliber is compressed to the sensor imaging module. The sensor imaging module divides the optical signal after phase correction and image motion compensation to visible light and mid-infrared light, thereby realizing visible light imaging. The mid-infrared light is reconstructed for obtaining a super-resolution image through four image frames and a super-resolution algorithm. The high-resolution multiband optical composite imaging detecting system has advantages of improving infrared resolution, reducing imaging fuzzy caused by high-speed moving platform motion and system scanning. Furthermore the system and the method have advantages of low power consumption, small size and small weight.

The invention provides a method for small-area three-dimensional passive cavitation imaging and three-dimensional composite imaging based on an area array, wherein a two-dimensional passive cavitation imaging algorithm is expanded to a three-dimensional algorithm and a multi-stage continuous self-adaption trapped wave system is designed to research a mechanism of inertial oscillation of a cavitation micro bubble in a sound field, and a dynamic aperture receiving technique is used for further processing of three-dimensional data. Delayed array element receiving of the area array is then disposed to adjust an angle of a passive receiving plane, three-dimensional conversion is carried out on the three-dimensional data and then three-dimensional recombination is carried out on the data in order to realize the three-dimensional passive cavitation imaging. By the method for the small-area three-dimensional passive cavitation imaging and the three-dimensional composite imaging based on the area array provided by the invention, three-dimensional passive cavitation multi-angle compound imaging with high resolution, high signal-to-noise ratio and high efficiency can be obtained, and a selective monitoring manner can be provided for clinical operations by combing the passive cavitation imaging with other techniques.

The invention discloses a system for rapidly determining an accurate imaging scheme for belt material defect detection. The system comprises an accurate calculation resolution testing module, a compound imaging system module, a calibration system module and an image parameter calculation and scheme determination module, wherein the accurate calculation resolution testing module is used for measuring a defect size of a tested sample and determining an imaging resolution; the calibration system module is used for executing rapid focusing before imaging, positioning a focusing position, calibrating a light source of a camera and determining an imaging distance of the camera; the compound imaging system module is used for imaging defects of a motion sample and finishing imaging at a light field, a dark field, a transition field and sidelight according to different light source angles; and the image parameter calculation and scheme determination module is used for estimating and calculating the image resolution, selecting the model of the camera, calculating the imaging distance according to the imaging resolution and the imaging angles, carrying out calibration calculation and image processing, and outputting the final imaging scheme. The system has the beneficial effects that the automation degree is high, the calculation is accurate, rapid calibration and surveying are realized, and the testing efficiency is greatly improved.

The invention provides a multi-shape plane shear wave composite imaging method based on Mach cone effects. Through regulating an acoustic radiation force to excite a probe to be quickly focused on different longitudinal depths of a tissue, a quickly-moving shear wave source is formed, coherent interference happens to shear waves generated by multiple wave sources due to Mach cone effects, a large-range shear wave plane moving to two sides is formed, the shear wave propagation condition is monitored in an ultra high-speed and ultrasonic mode, the shear wave speed is predicted, a tissue shear modulus is inverted, and a tissue elastic graph is generated; speeds or directions of shear wave sources are regulated, different shapes of shear wave planes are formed, a shear wave plane with a different shape generates a different sub elastic graph, and the sub elastic graphs are weighted and composited to form a final elastic graph. The tissue can be induced to generate large displacement, the imaging area is expanded, the shear wave elastic imaging robustness is enhanced, different shapes of shear waves are formed, the sub elastic graphs formed by the different shapes of shear waves are weighted, the imaging noise can be reduced, and the shear wave elastic imaging quality can be significantly improved.

The invention discloses a common-caliber beam forming device for infrared rays / lasers / microwaves millimeter waves, relates to a common-caliber beam forming device, and belongs to the crossing field of the optical technology and the microwave technology. The common-caliber beam forming device for the infrared rays / the lasers / the microwaves / the millimeter waves comprises an infrared ray / laser reflecting plane, a supporting flat plate, an air layer and adjusting mechanisms. The infrared ray / laser reflecting plane is formed by a plurality of sub-pieces in a spliced mode. The supporting flat plate is formed by a plurality of sub-plates in a spliced mode. The adjusting mechanisms are used for fixing and supporting the sub-pieces and capable of achieving the horizontal adjustment, the vertical adjustment and the longitudinal adjustment of the sub-pieces, the plane type of the infrared ray / laser reflecting plane is adjusted by adjusting the adjusting mechanisms to ensure the infrared ray / laser reflecting planes of all the sub-pieces are in a same plane. The thickness of the air layer can be slightly adjusted through the longitudinal adjustment of the adjusting mechanism, so that the transmitting frequency band of the microwaves / millimeter waves can be adjusted slightly. The adjusting mechanisms had a locking function after adjustment is finished. The common-caliber beam forming device for the infrared rays / the lasers / the microwaves / the millimeter waves is mainly applied to composite imaging detecting guide semi-physical simulation systems for the infrared rays / the lasers / the microwaves(the millimeter waves).

There is provided an ultrasonic imaging apparatus capable of optimizing parameters in frequency compound imaging. The ultrasonic imaging apparatus includes an optimal parameter calculation unit that calculates optimal values of processing parameters in the frequency compound imaging, and the optimal parameter calculation unit outputs a result that satisfies c1√σ1=c2√σ2= . . . cn√σn where the number of divided frequency bands is n, a bandwidth of a divided signal is σi and a signal intensity at the time of addition is ci (i=1, 2, . . . , n).

The invention discloses a space compound imaging method and device based on an FPGA, and the method comprises the steps: obtaining supersonic non-space compound image data at different deflection angles; carrying out the interlacing processing of the supersonic non-space compound image data; carrying out the coordinate coordination of the supersonic non-space compound image data after interlacing processing, so as to enable the image data to which angle deflection happens to be recovered to the image data with zero angle deflection; carrying out the de-interlacing processing of the image data after coordinate correction; carrying out the superposing of pixels corresponding to the supersonic non-space compound image data with different deflection angles after de-interlacing, and generating a space compound image. The method reduces the implementation complexity of a space compound algorithm, can effectively improve the space compound calculation speed, reduces the processing time of images, and improves the imaging frame rate.