107 results about "Source imaging" patented technology

A system for producing modulated light is disclosed. The system comprises a spatial light modulator including a light modulating medium switchable between different states so as to act on light in ways which form overall patterns of modulated light. The system also includes an arrangement for switching the modulating medium between the different states in a controlled way and an illumination arrangement for producing a source of light. The system further includes an optics arrangement for directing light from the source of light into the spatial light modulator and for directing light from the spatial light modulator through a predetermined source imaging area. The optics arrangement cooperates with the illumination arrangement and the spatial light modulator so as to produce a real image of the source of light within the source imaging area such that an individual is able to view a virtual image of the overall patterns of modulated light from the source imaging area. A variety of novel optics arrangements are disclosed including specific combinations of different light sources, diffusing plates, polarizers, beam splitters, analyzers, lenses, mirrors, and holographic optical elements which allow the overall optical arrangement to be miniaturized to the same degree and in coordination with the spatial light modulator. The different light sources include using a plurality of light sources, such as LEDs, to form an array of light sources, each of the light sources providing light to a corresponding portion of the spatial light modulator.

The invention discloses a source imaging-based laser plummet digital calibrating method and device. According to the method, a reticle is used as a projection entity, an imaging light source is used for reticle imaging so that the image of the reticle is projected to a target at the infinite point and an infinite projection state is simulated, the comparison between the projection state and a debugging reference center of the target is carried out, and according to an infinite offset state, the reticle is adjusted. Compared with the prior art utilizing a device for projecting the reference center at the infinite point to a reticle, the method provided by the invention has higher calibrating precision. The method realizes amplification of image information of the target by an image amplification processing system, is convenient for observation calibration by a user and further improves calibration accuracy.

Systems and methods configured to implement sliced source imaging to produce a plurality of overlapping in-focus images on the same location of a single imaging detector without using beamsplitters.

The invention relates to application of deep learning in the technical field of computer vision. The invention particularly relates to a fan blade defect intelligent detection method based on a double-spectrum image. According to the method, the image segmentation technology is utilized to realize segmentation of the blade area, background removal is realized, the identification efficiency and accuracy are improved, the infrared image and the visible light image are fused through the image processing technology, and then the deep learning technology is utilized to perform defect identificationon a large number of fan blade images. By accumulating a large amount of blade damage defect data and via techniques through big data, development rules of various damage defects in a large amount ofblade damage data are mined, a mathematical model is constructed, prediction and evaluation of the blade defects and the health state are finally achieved in combination with the machine automatic learning technology, the image processing technology and the double-light-source imaging technology are fused, the utilization rate of image information is effectively increased, and image feature information is obviously highlighted.

A system capable of determining wavefront characteristics, such as air induced wavefront aberrations, includes a field programmable gate array (FPGA) device executing a phase diversity algorithm. The FPGA device can be a stand-alone device or comprise multiple FPGAs. The device receives an “in-focus” and an “out-of-focus” image having a known optical difference from that of the “in-focus” image. The device then performs as many phase diversity algorithm iterations as desired to reach an expression for the wavefront aberrations induced on the collected image data. The resulting wavefront data may be used to produce an enhanced image of the original image data. Example applications include remote sensors and targeting systems, and both passive imaging and active projection systems that compensate for wavefront anomalies.

A radiographic imaging apparatus performs imaging based on an examination order including a plurality of imaging protocols, executes image processing for the captured image based on the imaging protocol used at the time of the imaging, designates a change source imaging protocol and a change destination imaging protocol from the examination order based on an instruction of an operator, and changes the imaging protocol corresponding to the image captured based on the change source imaging protocol from the change source imaging protocol to the change destination imaging protocol. when the change of protocol is made, the apparatus executes image processing based on the change destination imaging protocol for the image before the image processing which is captured based on the change source imaging protocol.

A method for deriving an image sensor's 3D pose estimate from a 2D scene image input includes at least one Machine Learning algorithm trained a priori to generate a 3D depth map estimate from the 2D image input, which is used in conjunction with physical attributes of the source imaging device to make an accurate estimate of the imaging device 3D location and orientation relative to the 3D content of the imaged scene. The system may optionally employ additional Machine Learning algorithms to recognize objects within the scene to further infer contextual information about the scene, such as the image sensor pose estimate relative to the floor plane or the gravity vector. The resultant refined imaging device localization data can be applied to static (picture) or dynamic (video), 2D or 3D images, and is useful in many applications, most specifically for the purposes of improving the realism and accuracy of primarily static, but also dynamic Augmented Reality (AR) applications.

A decoding method of motor imaginary EEG signals based on OA-WMNE brain source imaging is disclosed. The method includes firstly adopting baseline correction and superposition averaging in time domainto preprocess the EEG signals and then obtaining the superposition averaging signals of each motor imagery task; utilizing a WMNE algorithm to transform it into brain source space to obtain the dipole estimation; determining the time interval of interest (TOI) according to the difference of waveform between the two motion imagery dipoles; subjecting all single motion imaginary EEG signals to inverse transformation and forming all dipole amplitudes at each sampling point in TOI into eigenvectors to obtain a group of features at the sampling point; forming all the features on the sample pointsinto feature sample sets, which are normalized by zero-mean value, and reducing the feature dimension by using the univariate feature selection method; and finally, utilizing a support vector machineto classify the features so that the highest average decoding accuracy is obtained, the spatial resolution of EEG is improved, which is helpful to improve the decoding accuracy of motion imagination task.

An electron emitter (1) and an X-ray tube (100) comprising such electron emitter (1) are presented. The electron emitter (1) comprises a cathode (3) and an anode (5) wherein the cathode (3) comprises an electron emission pattern (9) of a plurality of local areas (11) spaced apart from each other, each area being adapted for locally emitting electrons via field emission upon application of an electrical field between the cathode (3) and the anode (5). Electron beams (15) emitted from the local areas (11) may generate several X-ray source intensity maxima in a specific geometric pattern. An apparent loss in spatial resolution due to overlapping images on a detector can be corrected by using specific intensity patterns for the X-ray source (100) and by applying dedicated decoding algorithms on the acquired image such as coded source imaging (CSI).

The invention relates to an LED matrix correction method based on Fourier laminated imaging. The method comprises the following steps: modeling an imaging system and an LED matrix, and defining an initial position vector of each LED; calculating a cost function according to the captured low-resolution image; correcting the position deviation of each LED by taking solving the global optimal solution of the cost function as a target; and reconstructing a high-resolution image of the target sample after correcting the position deviation of the LED illumination matrix according to a Fourier laminated imaging method. According to the invention, position correction of the illumination light source is completed according to the optical calculation imaging theory and data collected by the opticalimaging system. For a multi-light-source imaging system, if the position arrangement of the lighting elements is not reasonable, many adverse effects such as imaging quality reduction can be caused tothe imaging system; by correcting the positions of the light sources using the method of the invention, the imaging definition of the system can be well improved, and artifacts generated by the lightsource arrangement structure on images can be weakened.

A radiographic imaging apparatus performs imaging based on an examination order including a plurality of imaging protocols, executes image processing for the captured image based on the imaging protocol used at the time of the imaging, designates a change source imaging protocol and a change destination imaging protocol from the examination order based on an instruction of an operator, and changes the imaging protocol corresponding to the image captured based on the change source imaging protocol from the change source imaging protocol to the change destination imaging protocol. When the change of protocol is made, the apparatus executes image processing based on the change destination imaging protocol for the image before the image processing which is captured based on the change source imaging protocol.

The present invention relates to an active imaging device for imaging a scene, comprising a scene illuminator that illuminates said scene with radiation at multiple illumination frequencies or an illumination frequency range covering multiple illumination frequencies, a radiation detector that detects radiation received from said scene in response to said illumination and that generates detection data from said detected radiation, a feature identifier that analyses said detection data and identifies different features in said scene, a frequency selector that separately selects for the identified features one or more selected illumination frequencies resulting in the minimum speckle noise in an image of the respective feature constructed from the detection data, which have been generated from radiation received in response to the illumination of the scene with radiation at said one or more selected illumination frequencies, and an image constructor that constructs a final image from the detection data, wherein the image portions of the identified features are constructed from the detection data, which have been generated from radiation received in response to the illumination of the scene with radiation at said one or more selected illumination frequencies, and wherein said image portions are combined into the final image.

The invention discloses non-contact aerial imaging elevator hall outer equipment which comprises a shading shell. A display assembly and an imaging assembly are arranged in the shading shell, a coverplate made of transparent materials and a detection device are arranged on the shading shell, the display assembly comprises a light source and two arrow-shaped indication blocks made of light guide materials, and the light source and the indication blocks are matched to form two image sources with indication functions. The imaging assembly carries out mirror image imaging on the image sources, and the two image sources form two real images at symmetrical positions relative to the imaging assembly; the detection device is connected with a control main board of an elevator, the detection deviceis provided with two induction areas, the two real images are respectively located in one induction area, and the detection device sends a control signal to the control main board according to the identified induction areas. The elevator can be controlled without contact, and cross infection of germs caused by key contact is avoided.