109 results about "Image field" patented technology

The invention discloses a sound authenticity identification method based on multi-modal feature deep interactive fusion. According to the method, a double-flow architecture is adopted, and a pre-trained BEATs model and a CNN14 network are respectively utilized to extract Transform sequence features and convolution time-frequency embedding features of an audio; an adaptive MobileFormer fusion device is innovatively proposed, an original MobileFormer structure used in the image field is transformed into a bidirectional cross-modal interaction module suitable for one-dimensional time sequence audio features, dynamic complementary modeling of local details and global semantic features is achieved through a cross attention mechanism, and dynamic nonlinearity is introduced to activate and enhance the expression ability; and the fused enhanced features are input into a hierarchical graph attention network ASSIST, and high-order semantic modeling and authenticity classification are completed by combining spectrogram and time sequence double-flow reasoning. Experimental results show that the performance of the method on an ASVspoof2021LA data set is superior to that of an existing baseline model. The method can effectively detect AI generation voice, replay attack and other forged voice, and is suitable for a voice authentication system.

The utility model discloses a shooting device for remote sensing imaging, and relates to the field of remote sensing imaging. The shooting device for remote sensing imaging comprises an unmanned aerial vehicle, a support unit and a shooting unit, the support unit and the shooting unit are arranged below the unmanned aerial vehicle, the support unit comprises a circular sliding rail, a sliding ring and supporting legs, the sliding ring is arranged below the circular sliding rail in a sliding mode, and the supporting legs are fixedly installed below the sliding ring; the shooting unit comprises a driving motor, a connecting frame and a shooting camera, the driving motor is fixedly installed at the bottom of the unmanned aerial vehicle, the connecting frame is connected with the output end of the driving motor and connected with the supporting legs, and the shooting camera is connected with the connecting frame. According to the shooting device for remote sensing imaging, the driving motor fixedly installed at the bottom of the unmanned aerial vehicle drives the connecting frame, the shooting camera and the supporting legs to rotate, so that only the unmanned aerial vehicle needs to hover in the air, when the shooting camera rotates by a shooting angle, the supporting legs do not shield the unmanned aerial vehicle, and the shooting stability and the imaging quality are improved.

The invention relates to a visual scale adaptive unmanned aerial vehicle detection method based on HRRP physical perception, and belongs to the technical field of mobile communication. The method comprises the following steps: constructing a cooperative monitoring architecture of an ISAC base station and a visual sensor, and establishing a space-time mapping relation between a radio frequency sensing coordinate system and a visual sensor coordinate system; performing macroscopic parameter estimation based on echo signals received by the ISAC base station, resolving spatial position coordinates of a target, generating a servo control instruction to drive a visual sensor holder to rotate, and locking the target at the center of a visual image field of view; extracting a frequency domain channel response of the echo signal, generating a time domain HRRP through IDFT, and estimating a radial physical span of a target in combination with a constant false alarm detection algorithm; constructing a self-adaptive image slice model based on physical structure constraint, and performing resampling on slices by using a scale normalization scaling factor; and inputting the normalized image block into the feature fusion detection network to complete fine detection of the unmanned aerial vehicle target.

The application discloses a kind of based on multi-modal medical image's lumbar disc herniation postoperative recurrence prediction system, belong to medical image field.Use lumbar image set and each image corresponding feature true value and each patient corresponding recurrence prediction label to carry out training to based on multi-modal image's lumbar disc herniation postoperative recurrence prediction model, in training process, using random gradient descent algorithm to update model parameter, obtain the trained based on multi-modal image's lumbar disc herniation postoperative recurrence prediction model.Through the application, benefit from the rich image features provided by multi-modal image, the prediction network trained based on multi-modal data shows higher accuracy in lumbar disc herniation postoperative recurrence prediction.

An imaging EUV optic (10) has a plurality of mirrors (M1 to M6) for guiding imaging light (16) along an imaging beam path from an object field (5) to an image field (11). The imaging optics (10) have a total apodization tilt APO Z3 that is less than 10%. A beam path intersection region (K1, K2, K3) lies between a first partial beam path (M1M2, M2M3) and a second partial beam path (M3M4, M4M5) in the imaging beam path. The first partial beam path (M1M2, M2M3) lies between a mirror (M1, M2) and a mirror (M2, M3) directly following this mirror in the imaging beam path. The second partial beam path (M3M4, M4M5) lies between another mirror (M3M4) and a mirror (M4M5) directly following this further mirror in the imaging beam path. An object-image offset (d) OIS) is greater than 250 mm. This results in an imaging EUV optic whose usability for an EUV projection exposure system is improved.

An imaging optic (23) serves to image an object field arranged in an object plane, in which a lithography mask can be arranged as the object to be imaged, with imaging light via an imaging beam path into an image field arranged in an image plane, in which a substrate onto which the image is to be formed can be arranged. The imaging optic (23) has at least one correction device (32). This device has a correction element (30) arranged in the imaging beam path, the imaging effect of which varies across the image field. Furthermore, the correction device (32) has a correction element holder (33) and a correction element drive unit (34). The correction element holder (33) is driven by the correction element drive unit (34) during an imaging phase of the imaging optic (23) and can be displaced along a correction element displacement direction (35) extending transversely to the imaging beam path.The result is an imaging optic whose imaging effect is improved to achieve a predetermined imaging result.

The invention relates to a remote sensing image reverse editing method for a diffusion model, and belongs to the field of computer vision. The strong generation and editing capability of the diffusion model brings a series of potential safety hazards, and the image reverse editing technology aims at adding a layer of protective noise to an image, so that the diffusion model is difficult to output an ideal editing result. In order to solve the problems that an existing anti-editing technology is poor in effect on a remote sensing image and generally faces low efficiency and obvious protection traces, the invention provides an efficient and hidden protection scheme which comprises the following three steps: step 1, generating anti-editing disturbance based on hidden space high-frequency component suppression; step 2, noise generation network training based on single-time forward transmission; and step 3, concealment enhancement based on noise perception graph constraint. The method can effectively resist malicious image editing based on a diffusion model, is suitable for the field of remote sensing images, and gives consideration to safety, efficiency and image quality.

An imaging EUV optical unit serves for imaging an object field into an image field. The imaging optical unit has a plurality of mirrors for guiding EUV imaging light at a wavelength of shorter than 30 nm along an imaging beam path. The imaging EUV optical unit has an image-side numerical aperture of at least 0.3. An overall transmission of the plurality of mirrors is greater than 10%. An overall mirror surface, which represents the sum of all used mirror surfaces of the plurality of mirrors, is less than 1.5 m2. This design can yield an imaging EUV optical unit with improved usability for an EUV projection exposure apparatus.

The application discloses a kind of low field intensity magnetic susceptibility weighted imaging optimization method and system, it is related to magnetic susceptibility weighted imaging field, comprising: obtaining the K space original data obtained by scanning target object;According to K space original data reconstruction image field data, extract the amplitude data and phase data of image field data;Phase data is preliminary unwrapping processing, and unwrapping phase data is obtained;Unwrapping phase data is separated from background field, and local phase diagram is obtained;Local phase diagram and amplitude data are operated based on complex domain phase separation high-pass filter, and high-frequency phase data is obtained;According to high-frequency phase data and amplitude data, the reconstruction of magnetic susceptibility weighted image is carried out, and the magnetic susceptibility weighted image of target object is obtained.The application can significantly reduce the phase artifact of SWI image, and improve the definition of image detail.

The application discloses a kind of identification methods for human disturbance land, it is related to remote sensing image field, the method is by in edge computing terminal to the unified geometric orthographic correction of remote sensing image sequence, radiation normalization, cloud mask processing and format conversion, construct standardization image set, effectively improve the time series comparability and spectral consistency between remote sensing image, solve multi-temporal image illumination difference, geographical deviation and cloud interference and other influencing factors, provide high-quality input data basis for subsequent disturbance feature extraction;Meanwhile, the application combines air port identification algorithm, mechanical activity path detection and construction boundary expansion identification technology, comprehensively extracts ventilation corridor area, dynamic expansion area and mechanical disturbance area, constructs sensitive disturbance sampling point space layout scheme for disturbance potential, significantly improves the perception coverage ability and detection efficiency to key area, reduces redundant computing resource consumption, improves system real-time processing capability and early identification precision.

An imaging optical unit comprises a plurality of mirrors for imaging an object field in an object plane into an image field in an image plane. An image-side numerical aperture is greater than 0.55. A ratio between an object / image offset and a meridional transverse direction is at least 0.5. A ratio between a working distance between the object plane and a reflection portion, closest to the object plane, of one of the mirrors and the meridional transverse dimension is at least 0.05. The working distance is at least 270 mm. This can yield an imaging optical unit, the use of which is relatively manageable in a projection exposure apparatus, such as for EUV projection lithography.

We provide an imaging EUV optical unit for imaging the object field into the image field. [Solution] The imaging EUV optical unit (10) plays the role of imaging the object field (5) into the image field (11). The imaging optical unit (10) has a plurality of mirrors (M1~M5) for guiding EUV imaging light (16) with a wavelength shorter than 30 nm along the imaging beam path. The imaging EUV optical unit (10) has an image-side numerical aperture of at least 0.3. The total transmittance of the plurality of mirrors (M1~M5) is greater than 10%. The total mirror surface, which corresponds to the sum of all used mirror surfaces of the plurality of mirrors (M1~M5), is 1.5 m 2 It is less than [a certain value]. This results in an imaging EUV optical unit with improved usability for EUV projection exposure systems.

The application provides a lighting system, which comprises a light source, a coupling unit, a light-uniformizing unit and a relay unit, the light-uniformizing unit comprises a first light-uniformizing element and a second light-uniformizing element, the second light-uniformizing element is additionally arranged on the upper and lower sides of the first light-uniformizing element, the second light-uniformizing element makes full use of the light energy which is not used in the first image field without affecting the original exposure field size and illumination and without increasing the lighting light source, and separately provides uniform illumination energy for the alignment mark located outside the exposure field, so that the effective utilization rate of light energy is improved, and the second light-uniformizing element can be freely selected, so that the freedom of the illumination field selection is improved.

The present application belongs to the field of optical scattering imaging technology, and realizes the imaging through scattering medium based on optical memory effect.When the imaging target exceeds the memory effect range, the imaging failure is usually caused, thereby limiting the imaging field of view.The present application proposes a method and device for realizing non-invasive large field of view imaging through scattering medium based on PSF estimation and correlation operation.When the target is too large to exceed the memory effect range, the phase recovery algorithm is used to reconstruct the image of the sub-target O i of the target O hidden in the scattering medium, the positions of all sub-targets are obtained based on the point spread function estimation and autocorrelation and cross-correlation operation, the image of the sub-targets is spliced according to the positions, and the non-invasive large field of view imaging is realized.The present application can also realize non-invasive large field of view super-resolution imaging beyond the memory effect range, and can simultaneously consider the imaging field of view and imaging resolution.The present application has wide application in the fields of biomedical imaging and optical microscopic imaging.

The invention relates to a method for operating a projection exposure system (1) for microlithography. In the method according to the invention, during a first exposure phase, illumination radiation (16) is generated by means of an illumination optic (4) according to a first illumination setting, and the illumination radiation (16) is directed to an image field (11) of the projection optic (10) by means of a projection optic (10). During a second exposure phase, illumination radiation (16) is generated by means of the illumination optic (4) according to a second illumination setting, which differs from the first illumination setting, and the illumination radiation (16) is directed to the image field (11) of the projection optic (10) by means of the projection optic (10).During an exposure interval between the first and second exposure phases, illumination radiation (16) is generated according to the second illumination setting using the illumination optics (4). This illumination radiation (16) strikes an optical element (M2) of the projection optics (10), but is not directed to the image field (11) of the projection optics (10).

The present disclosure relates to a positioning method, device, computer readable medium and electronic device. The method comprises: in response to receiving a user positioning request, determining at least one candidate point of interest corresponding to the user positioning request, wherein the user positioning request comprises first WiFi fingerprint information; for each candidate point of interest, extracting a similarity feature of the first WiFi fingerprint information and second WiFi fingerprint information of the candidate point of interest by an image feature extraction model; and determining a target point of interest where the user is located from the at least one candidate point of interest according to each similarity feature. By using the image feature extraction model in the image field to depict the fingerprint similarity, the complex work of manually designing features can be avoided, and the fingerprint similarity measurement has good generalization ability.

This invention discloses a lightweight automatic instrument identification system, comprising: a data acquisition unit including an instrument image field acquisition device for real-time acquisition of instrument images; a processing unit including a front-end module, an instrument preprocessing module, an instrument alignment processing module, and an instrument identification module for processing the instrument images to identify instrument data within them; a transmission unit including a transmission module and an instrument data module for remotely transmitting the identified instrument data from the instrument images to a database in the management department; and an operation and maintenance unit for providing remote operation and maintenance services to the data acquisition unit, processing unit, and transmission unit. This lightweight automatic instrument identification system can acquire and automatically identify data displayed on the instrument panel in real time, enabling real-time acquisition, identification, transmission, and remote operation and maintenance of data displayed on the instrument panel, providing data support and information services for modern enterprise management.

The application relates to an intelligent AI information processing method and system, and relates to the technical field of information processing, which comprises the following steps: collecting sound detection information and image detection information; updating the sound detection information through a preset sound processing method; obtaining detection text according to the sound detection information; identifying a detection field from the detection text; identifying a marked image field through the image detection information; combining the detection field, the marked image field and the image detection information to obtain final uploading information and performing uploading storage. The application has the effect of improving the accuracy of information processing.

Optical Vision System The present invention relates to an optical vision system (10) comprising: at least one image projection channel (12), the projection channel(s) (12) comprising an eyepiece (20) defining an exit pupil for the projection channel (12), a device (14) for adjusting the position of the eyepiece(s) (20) relative to the eyes of a user, the adjustment device (14) comprising a unit (22) for generating indicator lights in the projection channel(s) (12) such that the indicator lights are positioned at the edge of the useful image field, and a mechanism (16) for adjusting the position of the eyepiece(s) (20) relative to the eyes of the user based on the indicator lights. Figure for the abstract: 2

The invention discloses a small-size long-focus optical lens, a camera module and electronic equipment. The small-size long-focus optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged from an object plane to an image plane along an optical axis; the first lens is a prism, and the object side surface or the image side surface of the prism is provided with a super lens or a super surface layer; the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspheric lenses. By introducing the super-lens or the super-surface layer and utilizing the plane structure and the phase regulation and control capability of the super-lens or the super-surface layer, the required focal power is realized, meanwhile, the axial size of the lens is remarkably reduced, the chromatic aberration is effectively corrected through the special dispersion characteristic of the super-surface, and full-view-field high-resolution imaging is realized in the visible light wave band. According to the invention, the problem that the volume limitation and the image quality of the telephoto lens in miniaturized equipment are difficult to consider at the same time is solved, and the telephoto lens is suitable for the imaging fields with thickness requirements, such as smart phones and vehicle-mounted cameras.

A method of determining optical properties of an optical system having an illumination system to illuminate an object field and a projection system to image the object field into an image field, comprises: providing an illumination of the object field via an illumination pupil comprising a plurality of pupil spots; providing an optical element with an optical surface comprising a plurality of shifting optical areas which effect an individual direction shift, depending on the respective shifting optical area, of an illumination beam entering the respective shifting optical area; calibrating the individual direction shift by measuring a pupil spot shift resulting from the shifting optical areas via a measuring pupil in the illumination beam path after the optical element for each of the pupil spots for a plurality of separate field points within the object field; and calculating the optical properties to be determined from the measured pupil spot shift.

An optical system serves to guide illumination and imaging light (7) from a light source (5; 42) to an image field (34), in which a substrate (36) can be arranged. An optical assembly (31a, 32) serves to guide the illumination and imaging light (7) along a beam path between the light source (5) and the image field (34) via at least one field plane (38, 33, 35) and via at least one pupil plane (23, 39). The light source (42) and / or a color filter (37) arranged in the beam path downstream of the light source (5) are embodied such that, for imaging light (7) generated by means of the light source (5; 42), a wavelength bandwidth between a total wavelength bandwidth and a reduced wavelength bandwidth which is at least 10% smaller than the total wavelength bandwidth can be specified. The result is an optical system with improved imaging performance for imaging specific objects with structures having different imaging requirements.

The utility model can be used in astronomical optics, including for obtaining photographic images of objects in monochromatic rays. The essence of the utility model is that in a device for obtaining photographic images of objects in any spectral interval, consisting of a node defining the boundary of the image field, a spectrograph, input and output slits, a photorecording device with a camera button, and a motor, according to the utility model, an image focusing node is additionally provided in front of the input and output slits, Also, a double-sided reflecting mirror and a motor for linear movement of this double-sided reflecting mirror are included symmetrically between the junction defining the boundary of the image area and the registration device.

A metrology system is provided including a lighting configuration, a camera, a scan lens, a mirror configuration and a variable focal length (VFL) lens. The mirror configuration is utilized to adjust to different imaged fields of view as corresponding to different view positions through the scan lens. For each imaged field of view, the camera is utilized to acquire a corresponding image set including images of the workpiece, wherein the VFL lens is controlled to rapidly vary the focus position of the metrology system for acquiring the images (e.g., wherein each image corresponds to different focus position data). For each corresponding image set, focus position data is determined that indicates three dimensional positions of a plurality of surface points on the workpiece that are within the corresponding field of view (e.g., enabling determinations of measurements of workpiece features that are within the corresponding field of view).

An imaging EUV optical unit serves images an object field into an image field. The imaging optical unit has a plurality of mirrors for guiding EUV imaging light along an imaging beam path. The plurality of the mirrors includes at least two normal incidence mirrors and at least one grazing incidence mirror. The last two mirrors in the imaging beam path are normal incidence mirrors and lack an imaging light passage opening. A reflection surface of an antepenultimate mirror in the imaging beam path faces the last mirror in the imaging beam path. This EUV optical unit can have improved usability for an EUV projection exposure apparatus.

The application provides a kind of depth camera light sensor eccentricity test method and device, comprising: marking the center position of depth camera imaging field of view;At least one target is set, the imaging center point of target is located on the median line of imaging field of view by carousel control depth camera rotation;Control depth camera first clockwise rotation alpha degree to make the imaging center point of target be located on the side boundary of imaging field of view, then control depth camera first counterclockwise rotation beta degree to make the imaging center point of target be located on the other side boundary of imaging field of view;According to the angle difference between the rotation angle 2 alpha degree and beta degree, the pixel difference formed in imaging field of view is determined, and then the eccentricity value of light sensor is determined according to the pixel difference.The depth camera is driven to rotate by carousel in the application, and the eccentricity value of light sensor is calculated by cooperating target in the imaging field of view of depth camera, which realizes more simple, easy to realize the calculation of light sensor eccentricity value.

Method for testing an OCT device (14) in which the axial resolution, the axial depth of the measurement window, the OCT roll-off, the numerical aperture, the OCT sensitivity, the signal-to-noise ratio and / or the image field curvature of the OCT device (14) are determined, in which a first test object (27) is arranged in an OCT beam path (16) of the OCT device (14), wherein the first test object (27) comprises a layer structure (29) of a plurality of transparent layers and an entrance body (30), wherein OCT light emitted from the OCT device (14) enters the entrance body (30) via an entrance surface and propagates through the entrance body (30) to the layer structure (29), and wherein the entrance surface of the entrance body (30) is shaped as a lens surface (31), and wherein the The lens surface (31) shaped entrance surface of the focus of the OCT beam path (16) is positioned within the layer structure (29).

The invention discloses a vehicle-mounted ISP image follow-up visual field processing module. The module comprises a camera, an FPGA (Field Programmable Gate Array) programmable logic device and an image data storage DDR (Double Data Rate), the FPGA programmable logic device comprises a CAN (Controller Area Network) bus interface, an MIPI (Mobile Industry Processor Interface) input interface and an MIPI output interface; an ISP visual field processing program is arranged in the FPGA programmable logic device, the ISP visual field processing program is burnt in the FPGA programmable logic device, the ISP visual field processing program receives image data from the camera through the MIPI input interface and stores the image data in the image data DDR memory, the ISP visual field processing program receives corner information through the CAN bus interface, and the corner information is stored in the image data DDR memory. The ISP visual field processing program processes the image data, and then the MIPI output interface outputs image visual field information. When the commercial vehicle turns, the condition of a wider area can be observed, and driving safety guarantee is provided for a driver.

An imaging EUV optical unit serves for imaging an object field into an image field. A plurality of mirrors serve for guiding EUV imaging light at a wavelength of shorter than 30 nm along an imaging beam path from the object field towards the image field. An overall transmission of the plurality of mirrors for the EUV imaging light is greater than 5%. The image field of the imaging optical unit has a maximum extent of more than 26 mm in an image plane. This can yield an imaging EUV optical unit with improved usability for an EUV projection exposure apparatus.

The application discloses a two-dimensional image field-based binocular stereovision underwater concrete three-dimensional reconstruction method, and belongs to the technical field of binocular stereovision underwater concrete three-dimensional reconstruction. The method comprises the following steps: acquiring an underwater video sequence, extracting a key frame and constructing a two-dimensional time sequence motion model; based on the two-dimensional time sequence motion model, adopting two-dimensional motion-texture joint denoising to generate an optimized noise mask image; based on the optimized noise mask image, adopting a mask-guided stereomatching method to establish a disparity map, and constructing a three-dimensional point cloud according to the disparity map; and performing statistical filtering and voxel grid time sequence frequency screening on the three-dimensional point cloud to generate a pure underwater concrete three-dimensional point cloud. The application realizes the core target of 'time sequence denoising + detail reservation', has the advantages of low calculation cost, good real-time performance, and suitability for rapid reconstruction of massive underwater video data, solves the problem of resource waste caused by invalid calculation, and significantly improves the real-time performance of the algorithm.