857 results about "Image rotation" patented technology

The invention aligns a set of plural images to construct a mosaic image. At least different pairs of the images overlap partially (or fully), and typically are images captured by a camera looking at the same scene but oriented at different angles from approximately the same location or similar locations. In order to align one of the images with another one of the images, the following steps are carried out: (a) determining a difference error between the one image and the other image; (b) computing an incremental rotation of the one image relative to a 3-dimensional coordinate system through an incremental angle which tends to reduce the difference error; and (c) rotating the one image in accordance with the incremental rotation to produce an incrementally warped version of the one image. As long as the difference error remains significant, the method continues by re-performing the foregoing determining, computing and rotating steps but this time with the incrementally warped version of the one image.

A method and apparatus are provided for correcting for optical misalignment of the dual (left and right) images produced by a stereo electronic endoscope, or of the corresponding dual images produced by coupling electronic imaging devices to each of two monocular teaching ports of a stereo optical endoscope. The stereo image alignment technique comprises electronically capturing the video image data of the dual images, and subsequently processing that data electronically to correct for optical alignment errors. The method involves digitizing the electronic data and digitally performing the equivalent of vertical image shift, and / or image size change, and / or image rotation as required to correct for any visual image misalignment.

A pattern signal is steganographically encoded in a content object to aid in identifying distortion (e.g., image rotation) to which the object may be subjected. The signal may include a feature that can be used to unambiguously identify correct orientation.

The present invention relates to an image processing apparatus and an image processing program, and an image processing method for making various operations be performed more comfortably. A rotation input section 14 is provided substantially at the center of a mobile phone 1. When the rotation input section 14 is rotated in a clockwise or counterclockwise direction, an image displayed on a display section 13 is rotated to be displayed. In addition, when the rotation input section 14 is pressed at an upper, lower, left or right portion thereof toward inside of the mobile phone 1, a display range of the image displayed on the display section 13 is switched. For example, in a case where a map is displayed, the map is rotated when the rotation input section 14 is rotated, and the map is scaled up / down when a predetermined position of the rotation input section 14 is pressed. The present invention may be applied to mobile phones.

Providing video telephone apparatus where the orientation of a picked-up image or a received image can be changed according to the orientation of the image pick-up section or the display, thus allowing transmission or display of a proper image at any time.In video telephone apparatus according to the invention, an image pick-up section outputs the image data on the target object to a transmit image rotating section. The transmit image rotating section performs rotation processing on a picked-up image so that the upper side of an image pick-up section in the vertical direction coincides with the upper side of an image to transmit to the distant party, based on the orientation of the image pick-up section detected by an image pick-up vertical direction detector. A picture signal received from the distant party is demodulated and output to a receive image rotating section. The receive image rotating section performs rotation processing so that the upper side of the receive image is at the upper side of a display in the vertical direction, based on the vertical direction of the image pick-up section of the an image pick-up vertical direction detector, that is, the orientation of the display.

A system and method to provide 180-degree rotation of image data at full throughput. The system includes a memory access controller that writes bursts of image data into a rotation buffer. The image data is then read out of the rotation buffer in the reverse order from which it was written to thereby accomplish rotation. By alternating the position in the rotation buffer in which the image data is written such that an image is either written into the buffer from top and read from the bottom or written into the buffer from the bottom and read out from the top, a one page rotation buffer of can be used to concurrently process two pages.

An image processing / displaying apparatus comprises a data storage unit configured to store 3-dimensional volume data, a cross section information generation unit configured to generate cross section information by reconstructing the 3-dimensional volume data stored in the data storage unit, an image display unit configured to display a cross section image of a subject in accordance with the cross section information generated by the cross section information generation unit, a locking unit configured to designate an affected part in the cross section image as a rotation center and a control unit configured to control image rotation on the image display unit so that the affected part is contained in the cross section image, when operation for rotating cross section is performed by an operator.

An angle absolute encoder comprises an encoded code rod that has code marks, such as pairs of fine code lines and coarse code lines. Light is reflected from or transmitted through the code marks and detected by a light detector to determine absolute angle position.

The invention provides a real-time video field fire smoke detection method based on a convolutional neural network. A smoke image data set is collected through an experimental simulation mode, and a training set, a test set and a verification set are created; the training set, the test set and the verification set are subjected to automatic annotation, and in combination of manual adjustment, thetraining set, the test set and the verification set with a real label are obtained respectively; the training set and the verification set with the real label are subjected to image rotation processing, color channel color addition and subtraction processing and scaling processing to obtain the processed training set and the processed verification set with the real label; the parameters of the convolutional neural network are initialized, and according to the training set with the real label after scaling processing, a well-built convolutional neural network model is trained; a to-be-detectedfield monitoring image is acquired in real time, and through the trained convolutional neural network model, a smoke target detection frame is predicted and optimized; and inter-frame confidence enhancement and relocation are carried out on the target detection result given by the trained convolutional neural network model.

A secondary projection imaging system in a multi-beam apparatus is proposed, which makes the secondary electron detection with high collection efficiency and low cross-talk. The system employs one zoom lens, one projection lens and one anti-scanning deflection unit. The zoom lens and the projection lens respectively perform the zoom function and the anti-rotating function to remain the total imaging magnification and the total image rotation with respect to the landing energies and / or the currents of the plural primary beamlets. The anti-scanning deflection unit performs the anti-scanning function to eliminate the dynamic image displacement due to the deflection scanning of the plural primary beamlets.

A method for correlating or finding similarity between two data sets. The method can be used for correlating two images with common scene content in order to find correspondence points between the data sets. These correspondence points then can be used to find the transformation parameters which when applied to image 2 brings it into alignment with image 1. The correlation metric has been found to be invariant under image rotation and when applied to corresponding areas of a reference and target image, creates a correlation surface superior to phase and norm cross correlation with respect to the correlation peak to correlation surface ratio. The correlation metric was also found to be superior when correlating data from different sensor types such as from SAR and EO sensors. This correlation method can also be applied to data sets other than image data including signal data.

An omnidirectional image processing apparatus is provided that enables the visibility of a specified monitoring object in an omnidirectional image to be improved while maintaining the continuity of that omnidirectional image. An omnidirectional image processing apparatus (400) is an apparatus that performs image processing on an omnidirectional image, and has a monitoring object specification section (405) that specifies a monitoring object photographed in the omnidirectional image, an image rotating section (406) that rotates the omnidirectional image so that the position of a specified monitoring object becomes upper-central, and a center position moving section (407) that moves the center position of the omnidirectional image rotated by the image rotating section (406) downward by means of warping processing.

An embodiment of the invention provides a method for use in face recognition. The method includes: obtaining a coordinate of facial feature points after detection of the facial feature points of a user image; calculating the angular difference between a human face and a horizontal direction based on the coordinate of facial feature points, and rotating the user image until the angular difference between the human face and the horizontal direction matches a preset standard angle; calculating a size ratio between the human face and a preset standard human face according to the coordinate of facial feature points, and scaling the user image according to the size ratio; and according to the location of the facial feature points in the user image, cropping the user image after rotation and scaling into a standard area size so that the facial feature points are in the standard position of the standard area, and obtaining an aligned facial image of a consistent size through pre-processing of the user image so that the facial features of the same user are more consistent and the effects of low-quality images on face recognition are eliminated. In addition, the invention also provides an apparatus for use in face recognition.

A device for automatically creating a photo album is disclosed. A face detection unit detects faces from an inputted image, an inclination determining unit determines an inclination of the inputted image based on inclinations of the faces, a temporary trimming reference area determining unit determines a trimming reference area containing one or more of the faces, a temporary trimming reference point determining unit determines a trimming reference point in the trimming reference area, an image rotating unit rotates the inputted image depending on the inclination of the inputted image, a trimming unit sets in the inputted image a layout frame of an image insertion area of a photo album template such that the layout reference point is positioned on the trimming reference point and the trimming reference area is contained within the layout frame and carries out trimming, and a template composition unit combines the trimmed area with the template.

The invention discloses a hybrid solid-state multiline optical scanning and distance measuring device. The characteristics lie in that the device comprises an emission light source, a reflecting mirror, a Dove prism, a light receiving module and a signal processing unit, wherein the emission light source is used for emit infrared detection light; the reflecting mirror reflects the infrared detection light emitted by the emission light source and reflects infrared detection light reflected by a detected object or barrier; the Dove prism is located between the reflecting mirror and the light receiving module, and the angular velocity of rotation of the Dove prism is half of the angular velocity of rotation of the reflecting mirror; the light receiving module receives the infrared detection light emitted by the Dove prism, and a photoelectric sensor in the light receiving module converts optical signals into electric signals; and the signal processing unit is connected with the photoelectric sensor, and calculates the distance according to the electric signals converted by the photoelectric sensor. According to the invention, the Dove prism structure is additionally arranged so as to correct a problem of image rotation brought about by rotation, thereby realizing multiline distance measuring.

The invention discloses a ship target detection and identification method for a satellite-borne remote sensing optical image. The method comprises the following steps of preprocessing, ineffective information removal, connected region marking, feature extraction and classifier design. A coarse-to-fine strategy is adopted, firstly, a satellite image is subjected to downsampling and Gaussian filtering processing, then, land and isolated noisy points are removed from the processed image, a candidate region is quickly extracted and is marked, feature information is extracted after the image is rotated, then, the feature information is put into a pre-trained classifier to be furthered confirmed and analyzed, false alarms are removed, and a real ship target is found. Meanwhile, the invention also realizes a ship target detection and identification system for the satellite-bone remote sensing optical image. By use of the technical scheme, satellite-borne storage and calculation of limited resources can be effectively utilized to improve the stability and the real time of a ship detection algorithm, meanwhile, a false alarm rate is effectively lowered, and accurate data can be provided for maritime search and rescue and ship image positioning in time.

The embodiment of the invention discloses an implementation method of a terminal with a double camera which has two cameras arranged inside at an angle of 90 degrees. The method comprises the following steps: a first camera of the cameras is selected to carry out video collection; the terminal adopts a vertical screen display mode or a transverse screen display mode matched with the first camera to realize data display; camera switching is completed and a second camera of the double camera is used to replace the first camera to complete video collection; finally, video display mode switching of the terminal is carried out. Meanwhile, the embodiment of the invention also discloses an image display method of a communication terminal and a communication terminal. The embodiment of the implementation method ensures that the terminal represents different display modes through adopting different cameras, and that full screen application of the terminal in vertical screen mode or transverse screen mode can be realized when either of the double camera is used to carry out video collection, thereby avoiding extra image rotation processing of full screen image display.

The invention discloses an image rotation correction method and a system and an electronic device. The image rotation correction method carries out the following steps before storing or browsing images: A: reading original image data; B. detecting the rotation angle of the image data: rotating images several times, calculating the reliability indices of the image before rotation and the images after each rotation, and marking the rotation angle whose reliability index is highest as the needed rotation angle, wherein, the rotation angle is the relative angle of the original image and image during normal checking; and C. according to detected rotation angle, carrying out rotation correction on the image. The invention utilizes the technologies in the fields of image processing, mode identification and the like to automatically detect the rotation angle and correct the rotation of the image data before storing or displaying the image data to a user to browse, thus ensuring that the user can see the image which is treated by rotation correction when browsing images and reduces the trouble for users to manually correct with an image browsing tool.

A monitor apparatus for a laparoscopic surgery rotates images captured by a laparoscope as an endoscope and displayed on monitors for the laparoscopic surgery clockwise or counter-clockwise according to commands for rotating the images by surgeons who use image rotation manipulation parts such that the images of surgical devices displayed on the monitors are arranged in the direction where the surgeons can actually manipulate the laparoscopic surgical devices most conveniently.

The invention discloses a picture similarity calculation method, comprising the steps of: (1) calculating hash values of two pictures to be compared by using a hash method based on DCT (Discrete Cosine Transformation); (2) calculating the Hamming distance dis-h between the two hash values; (3) if the Hamming distance is not in a set range, directly calculating the similarity of the two pictures via a formula; (4) if the Hamming distance is in the set range, calculating a hash value by using a hash method based on radial projection; and (5) calculating a Pearson's correlation coefficient of the hash value obtained last step, and calculating the similarity of the two pictures in combination with the Hamming distance obtained in step 2. The method has certain robustness for image rotation, avoids the influence caused by gamma correction or color histogram adjustment, and improves the accuracy of picture similarity results.

A conversion control unit divides a transform coefficient into code blocks. A storing device has a storage capacity corresponding to data size of the code blocks. To the conversion control unit, rotation / inversion control information including information of the rotation angle and the inverting direction is input. The conversion control unit generates a control signal on the basis of the rotation / inversion control information and sub-band information of the transform coefficient. An address generating unit generates a write address on the basis of a control signal. By accessing the storing device in predetermined order on the basis of the write address at the time of writing the code block to the storing device, an image rotating / inverting process is performed.

In vivo visualization systems are described which facilitate tissue treatment by a user in utilizing real time visualized tissue images with generated three-dimensional models of the tissue region of interest, such as the left atrial chamber of a subject's heart. Directional indicators on the visualized tissue as well as the imaging systems may be utilized while other variations may utilize image rotation or manipulation of visualized tissue regions to facilitate catheter control. Moreover, visualized tissue regions may be combined with imaged tissue regions as well as navigational information to further facilitate tissue treatments.

Image rotations of 90°, 180° and 270° and horizontal and vertical mirroring image transformations are performed losslessly and with greatly enhanced speed by processing orthogonal transform coefficients in a zig-zag order with direct storage of S (size) values, reassociated R (run of zero valued coefficients) from an adjacent coded orthogonal transform value and a non-zero valued transformation coefficient in reverse zig-zag order. Cache misses are avoided by processing values which are not widely separated in the coded data and other features of the technique and memory accesses are reduced to accelerate processing while extremely little computation is required. These effects are substantially augmented when intermediate codes having certain attributes including coding of zero valued coefficients and flagging certain code features are employed.

A metrology / inspection system moves the imaging and / or measuring equipment of the system relative to a wafer. Accordingly, measurement or inspection of the wafer does not require that the wafer be mounted on a precision stage. This allows the wafer to be at rest on any structure native in a processing apparatus when the system measures or inspects the wafer. Accordingly, measurement does not require removing the wafer from the processing apparatus and does not delay processing since the wafer can be measured, for example, during a required cool down period of device fabrication process. Alignment of an optical system includes pre-alignment base on edge detection using the optical system and more precise alignment using image recognition. An R-θ stage can position the optical system at inspection areas on the wafer. Image rotation can provide a fixed orientation for all images at the various inspection areas and can maintain the fixed orientation when moving from one inspection area to the next.

The invention relates to a method for carrying out fast vehicle comparison and vehicle type recognition at a tollgate. The method comprises the steps that firstly, a standard snapshot vehicle image is collected through a high-definition tollgate vidicon, the foreground vehicle detection is carried out on the image, and a vehicle area is extracted; the vehicle area is preprocessed, feature points are detected, a sift feature descriptor is calculated, a query tree carries out the inquiry, the rough vehicle type matching is achieved, a vehicle type data image set is obtained, accurate matching is carried out on standby vehicle type images through the sift feature descriptor again, geometric verification is carried out through geometric information, and a final vehicle type comparison result is obtained through rearrangement and is output. According to the method, the multi-scale sift feature serves as the descriptor of the image, the sift feature is the local feature of the image, invariance of image rotating, dimension zooming and luminance changing is kept, and certain stability of vision angle changing, radiation converting and noise is kept.

An apparatus and technique for compensating the display of an image obtained from a video camera system associated with an endoscope as it is moved through various orientations are described. The received optical image is converted to an electrical signal with an image sensor that can be a CCD or a CMOS detector. The endoscope video camera system has an inertial sensor to sense rotations of the received image about the optical axis of the endoscope and the sensor's output signals are used to rotate either the image or the image sensor. In case of rotation of the image sensor the rotation sensor can be a gyroscope or a pair of accelerometers. In case of a rotation of the image obtained with the image sensor the inertial sensor, which can be an accelerometer or a gyroscope, the image is rotated within a microprocessor for subsequent viewing on a video display.