35results about How to "Increase effective resolution" patented technology

A catheter with a small optical fiber or bundle of fibers includes a scanning mechanism constructed with the use of any vibration capable component. Magnetic, piezoelectric or other mechanisms are used to vibrate the end of the fiber and thus create a scanning effect which extends the field of view. One or more lenses may be utilized, including a lens attached to the distal tip of the image fiber, or a lens attached to the distal tip of the catheter for creating an image plane which can be scanned by the fiber. In one embodiment, multiple light sources may be connected to the fiber for enabling the use of field sequential color techniques for real-time imaging, as well as real-time fluorescent imaging for disease detection. A photodetector assembly connected to the proximal end may contain both filtered and unfiltered detectors for use with both standard imaging and fluorescent imaging. The resulting vision catheter is relatively inexpensive and disposable.

Methods and apparatus for improving the resolution of an electronic imaging device having an array of pixels. Sub-pixel dimension movements between an object and the array of pixels are made, and an image is formed at each position. Resulting shifted images are combined to yield an effective resolution corresponding to an array having smaller pixels. Such methods and apparatus allow optical systems with existing pixel devices to form effective images of smaller feature sizes.

Methods and apparatus for improving the resolution of an electronic imaging device having an array of pixels. Sub-pixel dimension movements between an object and the array of pixels are made, and an image is formed at each position. Resulting shifted images are combined to yield an effective resolution corresponding to an array having smaller pixels. Such methods and apparatus allow optical systems with existing pixel devices to form effective images of smaller feature sizes.

By adding stabilization and super-sampling to a digital pixel readout integrated circuit (ROIC), line of sight motion, that is usually costly and difficult to control, instead becomes an ally, doubling the effective FPA resolution in some systems. The base repartitioned digital pixel architecture supplements analog signal accumulation with off-pixel digital accumulation, greatly increasing dynamic range. Adding address mapping and increasing the ratio of memory locations to pixels, enables stabilization and resolution enhancement. Additional stabilization at sub-frame intervals limits the effect of latency and simplifies complex address mapping. Pixels gains are compensated in-ROIC, without requiring multipliers. A unique partitioning of functions between the ROIC and subsequent logic allows pixel biases and non-isomorphic sampling effects to be compensated off-ROIC, reducing overall system complexity and power.

The invention relates to visual detection and image processing. Aiming to improve the resolution of an image and the measurement accuracy of a system, the technical scheme of the invention is that: a random micro-displacement-based super-resolution image reconstruction method comprises the following steps of: calculating micro-displacement by utilizing characteristic points in images of image sequences with the random micro-displacement; performing high-accuracy extraction on coordinates of the same characteristic points; setting two original images with the pixel size of 2d, the resolution of N and the sub-pixel micro-displacement of a as A and B; and setting a to-be-reconstructed image with the resolution of 2N as H, and as the image sequences are displaced and then scenes corresponding to H0 and H1 in the image are imaged only in A and not in B, in the process of reconstructing H, making equal H0, H1 and A0, performing the reconstruction according to corresponding relationships between H2, H3 and the like, and A and B and own weights of H2, H3 and the like for H2, H3 and the like, and obtaining a formula by deduction to calculate gray values. The method is mainly applied to the image processing.

A display system is disclosed that includes a light source, an integrator rod receiving a light beam from the light source and producing an integrated light beam, a beam splitting device splitting the integrated light beam into at least a first cone of light and a second cone of light, the cones of light having complementary intensity distributions, and at least a first spatial light modulator and a second spatial light modulator, wherein the first spatial light modulator is capable of selectively reflecting portions of the first cone of light in an ON direction and the second spatial light modulator is capable of selectively reflecting portions of the second cone of light in an ON direction. The display system further includes a combining device for combining the selectively reflected portions of the cones of light in the ON direction and projection optics for projecting the combined reflected cones of light.

The invention discloses a region-based laser radar variable-density scanning system and method. According to the system and method, the three-dimensional fusion data of the image data of a video camera, the point cloud data of a laser radar or the image data and the point cloud data are analyzed, so that a critical region is obtained, the scanning region of the laser radar and the scanning densityof the laser radar are controlled according to the critical region, and control signals are sent to a laser transmitter; and the laser transmitter, based on the control signals sent by a laser scanning controller, transmits laser beams to perform laser scanning on the scanning region corresponding to the critical region with a first scanning density and transmits laser beams to perform laser scanning on scanning regions corresponding to regions other than the critical region with a second scanning density. Therefore, the effective data amount of the laser radar is improved, the scanning precision of the critical region is improved, invalid data amount is reduced, and the effective resolution of the laser radar can be increased.

The invention discloses a method for improving the data resolution ratio of a silica-based optical matrix processor and the processor. The method includes the steps that laser signals are output by a laser array and received and modulated by an optical modulator array to an N*1 vector A; a modulator matrix is formed by a micro-ring optical modulator matrix, wherein modulation depths form an M*N matrix B; optical modulation is carried out respectively by dividing the vector A into k subvectors and dividing the matrix B into k submatrixes so as to obtain the product of the k subvectors and the k submatrixes; the obtained product of the subvectors and the k submatrixes is detected by a detector linear array formed by k detectors, and then the product of the vector A and the matrix B is obtained; the element bit wide of each subvector and each submatrix is m, m bit vectors and m bit matrixes are formed after bitwise separation, and the product of the subvectors and the submatrixes is obtained by multiplying the bit vectors by the bit matrixes respectively.

Methods and apparatus for improving the resolution of an electronic imaging device having an array of pixels. Sub-pixel dimension movements between an object and the array of pixels are made, and an image is formed at each position. Resulting shifted images are combined to yield an effective resolution corresponding to an array having smaller pixels. Such methods and apparatus allow optical systems with existing pixel devices to form effective images of smaller feature sizes.

An active-matrix electroluminescent display including a display substrate; a first electrode disposed over the display substrate; two second electrodes disposed over the first electrode; an electroluminescent light-emitting layer formed between and in electrical contact with the first and second electrodes, so that first and second active areas are defined where the first electrode and each respective second electrode overlap, the light-emitting layer emitting light from each active area in response to current between the first and each respective second electrode; a drive circuit including a drive transistor electrically connected to the first electrode for controlling the flow of current through the electroluminescent light-emitting layer; two power supply circuits connected to respective second electrodes for selectively providing respective voltages to the respective second electrodes; and a controller for sequentially or simultaneously causing the power supply circuits to provide the voltages to the respective second electrodes.

The invention provides a fire intelligent detection system and a control method thereof. The system comprises multiple groups of flame detectors, an information processing unit, a PTZ camera and an upper computer monitoring center; each group of flame detectors is complied into a monitored region in a latticed manner, and used for collecting flame data information of different regions and transmitting the information to the information processing unit; a photoelectric self-identification device can be arranged at each flame detector; each photoelectric self-identification device is connected with the information processing unit and used for giving an alarm signal through the control of the information processing unit when the flame detector at a corresponding location collects abnormal data; the PTZ camera is connected with the information processing unit, the PTZ camera tracks the alarm signal sent out by the photoelectric self-identification device; and the image data at the photoelectric self-identification device region is collected and then sent to the information processing unit. The automatic precise sensing on the fire occurrence location can be realized, the fire alarm monitoring is more reliable, and the misinformation resistance is higher.

The invention uses microwaves in the spinning industry in order to determine the band mass of an elongated, substantially non-twisted fiber structure. In addition, a method for measuring the sliver mass from the frequency detuning and the damping of resonance signals of a microwave sensor while taking into consideration the moisture of the fiber structure with a computer is suggested. Likewise, a corresponding spinning preparation machine and a laboratory device for measuring the sliver mass are part of the invention. Lastly, a method and a spinning preparation machine for recognizing foreign matter in a moved fiber structure with the aid of microwaves is suggested.

A de-interlacing methodology generates frames from interlaced video signals by incorporating data from multiple fields into an interpolation-based de-interlacing process. Pixels directly above and below a blank pixel location and pixels immediately before and after the blank pixel location (in the fields immediately preceding and following, respectively, the blank pixel field) can be used to interpolate a pixel value for the blank pixel location. The use of pixel data from multiple fields improves the resolution of the interpolation process, thereby improving output frame accuracy. Adjacent pixel values can also be adjusted to further improve the consistency of the visual display provided by the output frames.

The invention relates to an analogue-to-digital direct operational conversion method and an analogue-to-digital cascade converter and an application thereof, and belongs to the signal measurement and processing, and electronic equipment technical field. The conversion method amplifies a residual voltage signal to twice the size thereof to serve as a cascade signal and the range of an output cascade signal is the same as the range of an input analogue signal. The analogue-to-digital cascade converter is composed of a plurality of AD conversion units which have same structural parameters and are in cascaded structure. The AC conversion units are composed of a voltage comparator, an electric level switch part, an operational amplifier and a resistor; the voltage comparator completes the polarity discrimination of an analog input signal; the resistor is matched with the operational amplifier to complete the residual operation and the function of twice amplification; and the electric level switch part is used for realizing the electric level match of interfaces of an analogue circuit and a digital circuit.

The invention relates to a circuit of a deep-sea geomagnetic measuring instrument. The precision of the existing device is too low, thereby being lack of practical significance in the application of analyzing the geomagnetic micro-change of a small ocean bottom region. The circuit comprises a power supply circuit, a setting / resetting circuit, a sensing measuring circuit and a main control circuit, wherein, the sensing measuring circuit comprises a single-axis magnetoresistive sensor chip IC4, a dual-axis magnetoresistive sensor chip IC5, three same operational amplifier circuits 5, a high-precision AC chip IC6 and a voltage reference chip IC7. The main control circuit comprises a main control chip IC8, a gyroscope chip IC9, a level conversion chip IC10 and a reading / writing interface J1 of an SD card. The circuit adopts the magnetoresistive sensing technology to constitute a deep-sea geomagnetic measuring circuit and utilizes the characteristics of high sensitivity and low power consumption of the magnetoresistive sensors, thereby having simple circuit connection, reducing the noise by 1 / f and improving the effective resolution.

An improved and simplified system and method for monitoring the wire web of a wire saw is described. The system contains a sensor that is moved over the wire web and thus determines the deflection of individual wires of the wire web or of wire groups thereof.

A digital receiver includes: an analog-to-digital (AD) converter (102) for setting discrimination levels in accordance with a discrimination level control signal and converting an analog input signal into a digital signal based on the set discrimination levels; a discrimination level adjusting circuit (104) for generating the discrimination level control signal and outputting the discrimination level control signal to the AD converter; a signal quality monitoring portion (108) for generating a transfer function correction control signal, which is information about a transfer function of the AD converter; and a transfer function correcting circuit (106) for performing signal processing on the digital signal so as to cancel a gap between the transfer function of the AD converter and an initial transfer function based on the transfer function correction control signal.

A microcontroller has a compact 8-bit processor and a differential input sigma-delta ADC (SDADC). In a low-cost pyroelectric sensor motion detector application, a sensor output signal is supplied onto a second differential input of the SDADC. A first programmable internal reference voltage source supplies VREF1 via an internal signal path onto a first differential input of the SDADC. A second programmable internal reference voltage source supplies VREF2 onto a reference voltage input of the SDADC. VREF1 sets the center of the SDADC input sample window, thereby avoiding the need to provide an external AC blocking capacitor. VREF2 sets the size of the window. Proper window sizing and sample averaging and the high-resolution SDADC obviate the need for input signal amplification. Throughput requirements on the 8-bit processor are reduced by providing a hardware averager and associated DMA controller, thereby making the overall solution a low-cost, noise-insensitive, solution.

The invention relates to a flexible ultrasonic detecting device and a use method thereof. The flexible ultrasonic detecting device comprises a row selector, a column selector, a top snakelike guide line, a bottom snakelike guide line, ultrasonic array elements, an ultrasonic array main negative electrode interface, an ultrasonic array resultant signal output port, a top flexible substrate and a bottom flexible substrate; the plurality of ultrasonic array elements are arranged on the upper surface of the top flexible substrate in an array mode; the row selector and the column selector are respectively used for controlling the on-off state of the ultrasonic array elements in each row and each column; the top snakelike guide line is arranged on the top flexible substrate, is respectively connected with the positive electrode of each ultrasonic array element and the ultrasonic array resultant signal output port, and is used for transmitting signals thereof; the bottom snakelike guide lineis arranged on the bottom flexible substrate, is respectively connected with the negative electrode of each ultrasonic array element and the ultrasonic array main negative electrode interface, and isused for connecting the negative electrode of each ultrasonic array element to the ultrasonic array main negative electrode interface; the lower surface of the top flexible substrate is engaged with the upper surface of the bottom flexible substrate. The signals collected by the flexible ultrasonic detecting device are high in accuracy.

The invention relates to a method for speech emotion recognition by utilizing emotion perception spectrum characteristics. Firstly, a pre-emphasis method is used to perform high-frequency enhancementon an input speech signal, and then, the signal is converted into frequency field by using fast Fourier transform to obtain a speech frequency signal; the speech frequency signal is divided into a plurality of sub-bands by using an emotion perception sub-band dividing method; emotion perception spectrum characteristic calculation is carried out on each sub-band, wherein the spectrum characteristics comprises an emotion entropy characteristic, an emotional spectrum harmonic inclination degree and an emotional spectrum harmonic flatness; global statistical characteristic calculation is carried out on the spectrum characteristics to obtain a global emotion perception spectrum characteristic vector; finally, the emotion perceptual spectrum characteristic vector is input to an SVM classifier toobtain the emotion category of the speech signal. According to the speech psychoacoustic model principle, the perceptual sub-band dividing method is used to accurately describe the emotion state information, and emotion recognition is carried out through the sub-band spectrum characteristics, and the recognition rate is improved by 10.4% compared with prior MFCC characteristics.

The invention discloses a light valve type stereo display structure, belonging to the field of electronic display. The light valve type stereo display structure mainly comprises a backlight unit (1), a light valve system (2), a color filtering layer (3) and a lens layer (4). A backlight system is composed of a luminous device and a control circuit and used for generating a plane light source of which the color and brightness are adjustable in certain range of a space domain and a time domain. The luminous device can be a point light source array combined with a uniform light sheet. The light valve system is used for accurately controlling the backlight passing rate of each pixel on corresponding position within corresponding time. The light valve system can be realized by a liquid crystal, electrowetting or micro-mirror array, and the light transmittance of each pixel point is controlled by an auxiliary circuit. The color filtering layer enables full spectrum to pass or selects part of the spectrum to pass. The lens layer is used for controlling the light path to form parallax error between left and right eyes and realize stereo display. The backlight system, the light valve system and the lens array coordinate to work and are used for two-dimensional or three-dimensional image or video display.

The invention discloses a mobile shooting system and method, and belongs to the technical field of electric appliances, and the system comprises a communication device which is used for transmitting shooting information planned for a shooting object to a control device, wherein the shooting information comprises an initial position and a moving path of a mobile shooting device during shooting; a control device which is used for controlling the mobile shooting device to move to an initial position and shooting according to a moving path after the mobile shooting device receives a shooting instruction triggered by the outside, and controlling a monochromatic light source arranged in the mobile shooting device to carry out stroboflash according to a preset stroboflash mode so as to expose the mobile shooting device; a mobile shooting device which is used for performing each single-channel analog gain according to a preset circular exposure mode after receiving a shooting instruction so as to collect a black-and-white image shot by a shooting object; and an image processing device which is used for carrying out picture splicing on the acquired black and white images and carrying out similarity registration on the image of each channel to obtain a true color image with all-channel alignment. According to the invention, the resolution can be improved.

The invention suggests the use of microwaves in the spinning industry in order to determine the band mass of an elongated, substantially non-twisted fiber structure. In addition, a method for measuring the sliver mass from the frequency detuning and the damping of resonance signals of a microwave sensor while taking into consideration the moisture of the fiber structure with a computer is suggested. Likewise, a corresponding spinning preparation machine and a laboratory device for measuring the sliver mass are part of the invention. Lastly, a method and a spinning preparation machine for recognizing foreign matter in a moved fiber structure with the aid of microwaves is suggested.

The invention relates to a method for speech emotion recognition using emotion perception spectrum features. Firstly, a pre-emphasis method is used to perform high-frequency enhancement on the input speech signal, and then the fast Fourier transform is used to convert it to a frequency to obtain a speech frequency signal; and then for the speech frequency The signal is divided into multiple sub-bands by using the emotion-aware sub-band division method; the emotional-aware spectral features are calculated for each sub-band, and the spectral features include emotional entropy features, emotional spectrum harmonic inclinations, and emotional spectrum harmonic flatness; The spectral features are calculated by global statistical features to obtain the global emotion perception spectrum feature vector; finally, the emotion perception spectrum feature vector is input to the SVM classifier to obtain the emotion category of the speech signal. According to the principle of the speech psychoacoustic model, the invention adopts the perceptual sub-band division method to accurately describe the emotional state information, and performs emotional recognition through the sub-band spectral features, and improves the recognition rate by 10.4% compared with the traditional MFCC features.