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45 results about "Delayed imaging" patented technology

Delayed Hyperenhanced Imaging. The presence and extent of a myocardial infarction can be assessed with delayed enhanced imaging. Delayed hyperenhancement (DHE) is caused by delayed washout of contrast agent from the myocardium. In normal myocardium, contrast media quickly washes in and out of the myocardial interstitium.

Optical coherence tomography method and optical coherence tomography system for complex polarization frequency domain

ActiveCN103344569AEliminate complex conjugate mirror imagesCancel noisePolarisation-affecting propertiesPlane mirrorDelayed imaging
The invention discloses an optical coherence tomography method and an optical coherence tomography system for a complex polarization frequency domain. The method comprises the following steps of: on the basis of optical coherence tomography of a polarization frequency domain, driving a reference plane mirror of a reference arm to vibrate by a phase modulation device, introducing sinusoidal phase modulation while transversely scanning a sample, performing processing such as Fourier transform on acquired interference signals of horizontal and vertical polarization channels to obtain chromatography signals of the horizontal and vertical polarization channels without parasitic images, extracting magnitudes and phases of the chromatography signals respectively, and calculating to obtain an intensity image, a fast axis image and a delay image of the sample with double refraction properties within a full-depth range. According to the method, the imaging speed is high, a complex conjugate mirror image, a direct-current background and the self-coherence noise in the coherent tomography of the polarization frequency domain are removed, the sensitivity cannot be reduced along with the prolonging of a transverse scanning distance, and the method is not sensitive to motion blur in the sample.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Apparatus and method for deinterlace video signal

The invention provides a method for eliminating the interlacing of image signal, which is characterized in comprising the following steps: a border part between the line image data in predefined column image field and the image data of scheduled line is found, and the interpolation data in the image field is obtained according to the border part; the movement value is extracted by utilizing the image data in current image field and the delay image data of two image fields; the film image is extracted according to the extracted movement value; the extracted movement and an image field delay movement value are compared, and a rapid-movement image is detected; the interpolation data and the image data generated in previous image field can be obtained through the interpolation according to the movement value, detecting rapid-movement image and film image. The image signal interlacing eliminating method has the advantages that: the interlaced scanning can be prevented from being transformed into a ladder shape of oblique line straight flange when the image is in sequential scanning, so the border part can be connected in a smooth straight line shape; For the part in rapid movement, the horizontal ripple residual image can be avoided. Furthermore, the image quality can be improved by restoring the image in film mode close to the original image.
Owner:MACRO IMAGE TECH

System and method for frequency channel packaging background processing

The invention relates to a system and method for frequency channel packaging background processing. The method comprises the following steps of rendering delay image unit number obtaining, collecting delay buffering by arranging an I/O delay collecting card, image-text material loading, program signal entering, delay processing, judging, image-text subtitle rendering, background video DVE rendering and outputting. According to the system and method for frequency channel packaging background processing, delay time is rendered in real time according to an image-text rendering broadcast server; collection delay is set inside the I/O delay collecting card; buffering processing is conducted on an input signal source video; under the condition that image-text subtitles need to be overlapped on a background video, each background video image unit undergoes delay buffering control inside the I/O delay collecting card and is overlapped with a GPU rendering result and directly output; under the condition that DVE processing is needed, each background video image unit enters the I/O delay collecting card to undergo delay processing and is collected into a memory immediately, and then returns to the I/O delay collecting card after undergoing GPU rendering, and therefore seamless connection is realized.
Owner:BEIJING DAYANG TECH DEV

Adjusting method of close-packed optical fiber array imaging and laser imaging device thereof

The invention relates to a correction method of a fiber compact array imaging and a laser imaging device where the method is applied; wherein, the fiber compact array comprises a plurality of fibers which are arranged along lines and inclined by a certain angle corresponding to the prearranged direction of an image plane. The correction method comprises that image signals which are respectively corresponding to all fibers in the fiber compact array are received; the image signals are respectively delayed in the shift register of an FPGA; all delay image signals drive the laser sources which are corresponding to all the fibers so as to image the image signals which are synchronously received on the image plane sequentially with prearranged interval through the fiber compact array. By adopting the method, the image signals which are synchronously received by the FPGA are delayed so as to lead the image signals to be output with prearranged interval and matched with the movement of the image plane in order to be imaged in the same line which is parallel to the prearranged direction, thus realizing the correction process; meanwhile, the invention has the advantages of high integrated level, easy realization, simple structure, fast operation speed, stable operation, low malfunction ratio, etc.
Owner:HANS LASER TECH IND GRP CO LTD
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