23 results about "Image rotation" patented technology

The application relates to the technical field of SAR data processing and target detection, and discloses a SAR image speckle perception rotating target detection method based on physical priori, which comprises the following steps: firstly, collecting multi-source SAR image data and carrying out pretreatment, and preliminarily separating targets and background noise through low-rank sparse decomposition; combining the equivalent noise layer and contrast of the SAR image and other physical priori, constructing a conditional diffusion model, modeling the rotating frame prediction as a conditional diffusion denoising process, and guiding the step-by-step optimization of the frame parameters by using the physical priori; introducing a Gauss-Wasserstein distance as a regression loss, combining a shape consistency constraint, and effectively relieving the angle period discontinuity and deformation problem; finally, further optimizing the detection result through a geometric consistency constraint, and outputting a high-precision rotating target detection image after post-processing enhancement. The method significantly improves the precision, robustness and physical consistency of the SAR image rotating target detection in a complex scene.

The application discloses a visual rich-text page restoration method based on an attention network, which comprises the following steps: inputting a document image into a trained document image rotation angle classification network to obtain the angle at which the document image needs to be rotated and correct the document image, and then using a projection correction algorithm to perform secondary correction on the document image; performing element detection on the document image through a page analysis network and performing corresponding processing to obtain element content corresponding to each element; using a plurality of deep learning algorithm network models connected in series to restore the document image into an editable document; and adding a contrast denoising training strategy in the page analysis network training to improve the accuracy of page analysis, because the plurality of network models are connected in series, according to the rule of the weakest link, the effect of page restoration will be affected by the page analysis model, therefore, the addition of the contrast denoising strategy can improve the accuracy of the network, promote the convergence of the network and shorten the training time.

The application relates to a target tracking method for a high-speed rotating platform, which comprises the following steps: acquiring an initial frame image for target tracking; acquiring a next frame image, performing image rotation according to a rotation angle existing in the initial frame image, and obtaining a rotated image eliminating the rotation angle; taking a target point coordinate of a previous frame image as a center, adopting a correlation filtering model to perform target detection in the rotated image, and obtaining a target point coordinate in the rotated image; converting the target point coordinate in the rotated image to a target point coordinate in a pre-rotated image, and taking the target point coordinate in the pre-rotated image as a center to obtain a search region; updating the correlation filtering model, and performing target tracking on a next frame image; and further performing target tracking on all subsequent frame images. The application realizes stable tracking in the high-speed rotating process of the image.

The utility model relates to medical instrument technical field provides a kind of prostate heat steam ablation handle and steam ablation system based on posture detection.The prostate heat steam ablation handle includes handle body, catheter assembly and posture detection element;Catheter assembly includes guide rod, puncture needle and camera module, guide rod and handle body are connected, puncture needle is movably threaded in guide rod, camera module is located in guide rod, posture detection element is located in handle body, camera module and posture detection element are electrically connected with host computer, camera module gathers the treatment image of treatment to be ablated area, posture detection element detects the posture information of handle body, host computer controls image rotation according to posture information to treatment image.The prostate heat steam ablation handle of the utility model, low cost, it is convenient to gather treatment image in real time in the process of operating handle, host computer self-adapting adjustment shows the posture of treatment image on host computer, so that it meets the use habit of doctor, avoid the medical accident of misjudgment generation.

The application provides an image processing method and related device. After receiving a user operation of rotating an image, the electronic device can determine a rotation angle of the image according to a display direction of information such as a face or text in the image, and rotate the image based on the determined rotation angle, so that the information such as the face or text is displayed in a forward direction on the display screen. In this way, the user can rotate the image to the desired direction by a simple operation, thereby effectively improving the interaction efficiency between the user and the electronic device while ensuring the user's browsing experience of the image.

In some implementations, a device may receive an image of a document, the image depicting a reference feature associated with the document, the reference feature including at least one of: a face of a person, a machine-readable code, or a text field. The device may identify a rotational angle of the reference feature as depicted in the image based on comparing the reference feature as depicted in the image to one or more orientation parameters of the reference feature associated with a display orientation associated with the document. The device may rotate the image of the document by an angle to obtain an orientated image of the document, the angle being based on the rotational angle of the reference feature as depicted in the image. The device may provide the orientated image of the document for display.

The present invention provides an image warping processing system, an image warping processing method, an image display device, a computer-readable storage medium, and a computer program product. The image warping processing system comprises a pre-rotation unit and a warping unit. The pre-rotation unit is used for performing at least one pre-rotation on a first image to be warped, to obtain a second image. The warping unit is used for performing a warping operation on the second image to obtain a third image conforming to a warping target. The warping target at least indicates a target rotation angle of the third image relative to the first image. By configuring a pre-rotation unit to perform at least one pre-rotation on an image to be warped, the present invention achieves the effect of realizing large-angle image rotation with a small amount of storage resources, and improves display real-time performance.

This application provides a laser processing control method, system, and apparatus, relating to the field of laser processing technology. The method includes: acquiring the pixel coordinate values ​​of at least two marked points on the material to be processed; determining the center coordinate values ​​of multiple processing areas and the deflection angle of the material to be processed based on the coordinate relationship between the processing platform and the vision positioning device and the pixel coordinate values; determining and correcting the image rotation angle of the galvanometer based on the deflection angle of the material to be processed and the installation angle of the galvanometer; controlling the laser galvanometer processing device to move to each processing area based on the center coordinate value of each processing area; determining and correcting the image scaling ratio based on the average thickness of each processing area and a preset scaling factor; and controlling the laser emitted by the laser emitter to pass through the galvanometer with the image rotation angle and image scaling ratio to perform laser processing on the processing area. This application can solve the problems of incoming material position deviation and inconsistent incoming material thickness, improving material processing accuracy.

An image defect detection method includes: photographing a standard color checker with a mask under different photography conditions to obtain a plurality of detection images; detecting a plurality of positioning marks on the detection image, and using the positioning marks to calculate an angle of image rotation; rotating the detection image by the angle in the reverse direction, and capturing a plurality of regions of interest in the detection image; calculating a plurality of preliminary edge positions at color boundaries in the regions of interest; removing a false positive position and a false negative position from the preliminary edge positions to obtain a plurality of final edge positions; calculating a standard deviation average and a number of out-of-bounds fluctuation peaks of the final edge positions; and filtering out, a defect edge region in each detection image that does not meet a standard.

The utility model relates to medical instrument technical field provides a kind of prostate heat steam ablation handle and system based on touch control adjustment. Prostate heat steam ablation handle includes handle body, catheter assembly and touch control element;Catheter assembly includes guide rod, puncture needle and camera module, guide rod and handle body are connected, puncture needle is movably threaded in guide rod, camera module is located on guide rod, camera module is used to gather the treatment image of the treatment to the ablation area, and is electrically connected with host computer;Touch control element is located in handle body, and is electrically connected with host computer;Touch control element is used to receive sliding input, to control the image rotation of the treatment image displayed by host computer. The utility model's prostate heat steam ablation handle, low cost, convenient operation, it is convenient to gather treatment image in real time during operating handle, and the display posture of treatment image on host computer is adjusted manually, so that it meets the use habit of doctor, avoids the medical accident of misjudgment.

The application discloses an Alzheimer's disease auxiliary evaluation method and system based on a clock drawing test, and relates to the technical field of Alzheimer's disease auxiliary evaluation. Firstly, a unified space reference direction is determined according to the posture of a subject to correct the test image rotation, thereby reducing the influence of posture differences on the space analysis result. On this basis, the clock face region is processed by partitioning, and a lateral aggregation index is constructed through the number relationship in each partition to quantitatively represent the abnormality degree of the digital space distribution. At the same time, the drawing time is introduced into the evaluation process, and the evaluation threshold is dynamically adjusted by comparing with the reference time range, so that the judgment standard can adapt to the drawing behavior characteristics of different subjects. The method takes into account the drawing result characteristics and the drawing process information, improves the stability and consistency of the evaluation result, and is beneficial to improving the objectivity and reliability of the clock drawing test in the auxiliary evaluation of Alzheimer's disease.

This invention provides a method, system, and computer device for feature matching of heterogeneous images. The method includes acquiring two heterogeneous images, extracting image edges to obtain feature regions as targets for matching; calculating the gray-level centroid of each target region; determining the principal direction of each target region, using the principal direction as the starting direction and clockwise as the positive direction, drawing several rays clockwise from the origin of each region, calculating the Euclidean distance between the corresponding intersection points and the origin of each region, arranging them in the generation order, removing several maximum and minimum values, and normalizing the remaining ordered array to form a feature vector; calculating the Euclidean distance between the feature vectors of each target region, and considering a successful match when the Euclidean distance between the feature vectors of two target regions is less than a preset threshold. This invention effectively solves the region matching problem caused by image rotation and scale changes in heterogeneous images, significantly improving the region matching results.

The application provides an accurate calculation method, device and equipment for ISAR imaging rotation angle. The method comprises the following steps: obtaining first coordinate information of a target in a radar large earth coordinate system; converting the first coordinate information into a geocentric coordinate system to obtain third coordinate information; calculating a first included angle and a second included angle by using the third coordinate information in the geocentric coordinate system; and calculating the ISAR imaging rotation angle by using the first included angle and the second included angle. In the application, the spatial relationship among the geocenter, the ground-based radar and the target is coupled and calculated through the conversion among the coordinate systems, so that the correlation between the rotation angle value and the target orbit radius is generated, the limitations brought by the two-by-two spatial calculation model (radar-satellite, geocenter-satellite) of the traditional method are avoided, the accuracy of the imaging rotation angle calculation is improved, and finally the application efficiency of the ISAR technology in the medium-high orbit long-distance observation scene is improved.

The invention belongs to the technical field of optical microscopic imaging, and particularly relates to a single objective lens light sheet microscopic imaging system, which comprises an exciting light modulation light path, a fluorescence detection light path and a microscopic imaging system, and is characterized in that the exciting light modulation light path is used for generating an illumination light sheet to excite fluorescence, and specifically comprises a laser, a beam expanding collimating lens group, a modulator, a scanning system and the like. The microscopic imaging system is used for transmitting an illumination light sheet and collecting light emitted by a sample, and comprises a dichroscope, a galvanometer module, an image rotating system, a tubular lens, an objective lens and the like. And the fluorescence detection light path comprises a relay lens group, a modulation element, a band-pass optical filter, a camera and the like. According to the invention, tasks of light sheet illumination and fluorescence collection in a traditional double-objective light sheet microscope are completed through a single objective, a remote focusing system or a micro-mirror reflection structure commonly used in an existing single-objective light sheet microscope does not need to be used, and a light sheet orthogonal to a focal plane is adopted for illumination. Compared with the existing light sheet microscope technology, the method has higher usability and flexibility, allows free switching of objective lenses under the condition of not changing other light paths, is compatible with any objective lens and various samples, does not need any software processing including deskewing in the principle of an obtained image, can directly display and use an original image, and is high in practicability. The system has higher resolution and is close to ideal isotropic imaging when various objective lenses are used for imaging.

The application provides an image curling processing system, an image curling processing method, an image display device, a computer readable storage medium and a computer program product. The image curling processing system comprises a pre-rotation unit and a curling unit. The pre-rotation unit is configured to perform at least one pre-rotation on a first image to be curled to obtain a second image. The curling unit is configured to perform a curling operation on the second image to obtain a third image meeting a curling target. The curling target at least indicates a target rotation angle of the third image compared with the first image. The application can achieve the effect of realizing large-angle image rotation with a small amount of storage resources by configuring the pre-rotation unit to perform at least one pre-rotation on the image to be curled, and improve display real-time performance.

This disclosure relates to an image matching method, apparatus, device, and medium. The method includes: determining a target image patch in a first image corresponding to a first feature point; obtaining a camera rotation matrix of the first image and a gravity vector in the camera coordinate system; determining a horizontal unit vector and a vertical unit vector in the camera coordinate system based on the camera rotation matrix; obtaining a rotation angle of the first image relative to a center point based on the vertical unit vector, the gravity vector, and the horizontal unit vector; determining first feature description information of the first feature point based on the rotation angle and the target image patch; and performing image matching processing on the first image based on the first feature description information. Therefore, by determining the image rotation angle based on the gravity direction, which is independent of the image itself, and determining the extraction direction for extracting feature description information based on the rotation angle, the accuracy and uniqueness of the extracted feature description information are ensured, thus improving the robustness of image matching.

The processing apparatus includes a light source, a mirror module, an image rotation module, and a stage. The light source is adapted to generate a light beam. The image rotation module is disposed downstream of the light source's optical path and includes a first reflector and a second reflector. The first reflector has a first reflective surface. The second reflector is located downstream of the first reflector's optical path and has a second reflective surface inclined relative to the first reflective surface. The stage is disposed downstream of the image rotation module's optical path. The mirror module is disposed in the optical path between the image rotation module and the stage.

An imaging system comprising a reel unit, a display unit with a display section, a cable section, and a camera section. The camera section includes an inertial measurement unit, an image sensor, and an electronic processor. The electronic processor is configured to receive rotation data from the inertial measurement unit, adjust the image rotation detected by the image sensor based on this rotation data, and determine whether the image rotation causes undefined areas on the display section. Undefined areas are regions where no image data is available for display.

This invention relates to the field of endoscopic image analysis technology, specifically to an intelligent recognition and lesion localization system for digestive endoscopy images. The system includes an endoscope posture analysis module, an image posture matching module, a mucosal texture displacement module, an image rotation correction module, and a lesion coordinate localization module. Based on an electronic endoscope, it analyzes the corresponding sampling times recorded by the voltage of the angle detector of the endoscope's steering control unit and compares the continuity of preceding and following sampling segments. This invention constructs a sequence of lens posture changes by analyzing the voltage trend of the angle detector, pairs the posture records with the acquisition sequence to form an association identifier, and combines this with the tracking of the mucosal texture displacement vector to evaluate the lens steering relationship. Using this as a reference, it calculates the viewing angle offset compensation amount and corrects the cavity wall center position. Furthermore, it adjusts the contour connection relationship of adjacent frames within the chromatic transition region, effectively overcoming the field of view variations and tissue spatial misalignment defects caused by endoscope movement, and ensuring the baseline stability of boundary mapping in continuous images.

This application relates to a target detection method, apparatus, electronic device, and readable storage medium, and pertains to the field of computer technology. The method includes: acquiring a target image acquired by an image acquisition device; determining a corresponding target detection model based on the installation method of the image acquisition device; the target detection model is trained based on sample images at at least one image rotation angle, and the target detection model has the ability to directly perform target detection without preprocessing the image for angle compensation; inputting the target image to be detected into the target detection model, and detecting target objects present in the target image through the target detection model to obtain the target detection result of the target image. This method can improve the efficiency of target detection.

This invention belongs to the field of computer vision and UAV autonomous localization technology. It discloses a UAV image matching method based on rotationally equivariant visual features. By introducing a group-equivariant convolutional structure, a rotationally equivariant feature extraction network is constructed for target matching, ensuring that the feature representation maintains mathematical structural consistency as the input image rotates. The method for generating feature point detection heatmaps is improved, and an offset correction network and a global offset loss function are designed to achieve automatic coordinate alignment of matching points, eliminating projection deviations caused by rotation and improving pose calculation accuracy. The global offset loss function constrains the spatial consistency of feature points under different viewpoints, significantly improving matching accuracy and stability. This invention achieves rotational equivariance and self-correction of matching projection errors from both network structure and training mechanism levels, enabling UAV visual matching capabilities that adapt to continuous rotation. This invention operates quickly and maintains stable performance in complex environments, closely reflecting real-world UAV flight scenarios.

The invention relates to the technical field of image processing, discloses a medical instrument image processing method, and particularly relates to an endoscope rotation image processing method and an endoscope. According to the invention, the spatial position of the real-time image is updated to obtain the rotation image, the problem of image rotation caused by rotation of the endoscope is solved, and stable display of the image is realized. The parameters of the feature extraction module are dynamically adjusted by determining the rotation angle distribution result, so that the feature extraction process can adapt to the rotation change degree of the endoscope, and the accuracy and comprehensiveness of feature expression are improved. Moreover, image estimation is iteratively updated based on a regularization item of a convolution attention mechanism, spatial frequency information is captured in a convolution mode, a key area is focused in combination with the space and channel attention mechanism, image blurring is effectively removed, and the image restoration quality is improved. In addition, a pure rotation angle is accurately separated from the compound motion by an attitude calculation method based on quaternion and a spiral displacement method, so that the precision of rotation correction is ensured.