10results about How to "Improve conversion accuracy" patented technology

The application provides a real-time conversion method for pixels and geographic latitude and longitude in low-altitude photogrammetry, which comprises the following three parts: unmanned aerial vehicle capability confirmation, real-time conversion service implementation deployment for pixels and geographic latitude and longitude in low-altitude photogrammetry, and GIS geographic information platform integration docking. Through real-time data collected by an unmanned aerial vehicle, combined with a computer vision algorithm and a spatial geometric transformation model, the specific pixel points in image data are associated with real geographic coordinates, so that accurate positioning and measurement of ground objects are realized. The application relates to the technical field of low-altitude photogrammetry, and through the cooperative work of real-time data collection by an unmanned aerial vehicle, real-time conversion service for pixels and geographic latitude and longitude in low-altitude photogrammetry, and a GIS geographic information platform, efficient mapping from a photographed image to a geographic coordinate is realized, and accurate and rapid technical support is provided for low-altitude photogrammetry.

The invention discloses a circuit for converting analog signals into PWM signals, and belongs to the technical field of signal transmission application. Comprising a precise sawtooth wave generating circuit and a signal comparison circuit, the precise sawtooth wave generating circuit provides sawtooth wave signals with accurately determined waveform amplitude, and the signal comparison circuit compares the sawtooth wave signals with analog input voltage signals and generates PWM signals with duty ratios linearly related to the amplitude of the analog voltage signals. The method has the advantages that the generated sawtooth wave is high in linearity, the amplitude variation range of the sawtooth wave can be accurately controlled between 0 and the reference voltage VREF, and a stable reference is provided for high-precision comparison; in the measuring range, the duty ratio of the output PWM signal and the amplitude of the input analog voltage are in a strict linear relationship, so that the accuracy of signal conversion is ensured; the duty ratio of the generated PWM signal can be continuously adjusted within the full range of 0-100%, no adjustment blind area exists in a traditional circuit, and the dynamic range and applicability of the signal are improved.

This invention provides an image conversion system and method between Bayer format and quad Bayer format. The system includes an image acquisition module that acquires an original Bayer format image and an original quad Bayer format image; a re-mosaic module that converts the original quad Bayer format image and the generated quad Bayer format image into a Bayer format image; a de-mosaic module that converts the original Bayer format image and the generated Bayer format image into a quad Bayer format image; and an image output module that outputs the generated quad Bayer format image and the Bayer format image. By unifying the re-mosaic and de-mosaic processes within the same system framework, the correlation between Bayer and quad Bayer formats can be better captured, and information loss during format conversion can be effectively reduced. The repeated re-mosaic and de-mosaic processes can also enhance each other, improving the conversion accuracy and quality, thus solving the problem of poor performance in existing Bayer and quad Bayer format image conversion methods.

The invention discloses an application system performance testing method and device, a medium and a program product, belongs to the technical field of artificial intelligence, and particularly relates to application of a large model in the field of software testing. Under the condition of determining that the target performance test requirement is valid, inputting the target performance test requirement into the semantic generalization large model; performing semantic analysis on the target performance test requirement through a semantic generalization large model to obtain a target keyword; inputting the target keyword into a rule generation small model, and processing the target keyword through the rule generation small model to obtain a target performance test case; obtaining a target test parameter of the target application system; based on the performance test script template, generating a target performance test script according to the target performance test case and the target test parameters; and executing the target performance test script to obtain a target performance test report of the target application system.

The utility model discloses a current-voltage conversion circuit structure for electroporation delivery. The current-voltage conversion circuit structure comprises a current-to-voltage conversion circuit and a voltage-to-pulse conversion circuit. The current-to-voltage circuit converts current signals into voltage through an input signal processing module, high-precision amplification is achieved through an operational amplifier and a feedback network of a signal amplification module, the driving capacity is enhanced through a transistor cascade circuit, and temperature drift is dynamically compensated in combination with a thermistor. The voltage-to-pulse circuit corrects non-linear errors through a resistance network of the linearization processing module, achieves gain adjustment through an operational amplifier and an adjustable resistor, and finally adapts to load changes through a field effect transistor and a negative feedback network. The circuit realizes high conversion precision, wide temperature range stability and load adaptive capability, and is suitable for high-precision scenes such as medical treatment or beauty electroporation, industrial sensing and the like.

The application discloses a tone conversion method and device, a storage medium and computer equipment, relates to the technical field of artificial intelligence, and mainly aims at improving the conversion accuracy of tone. The method comprises the following steps: obtaining audio data to be converted and a target tone; inputting the audio data to be converted into a preset semantic prediction model for semantic prediction to obtain a semantic information vector corresponding to the audio data to be converted; determining a tone feature vector corresponding to the target tone; performing cross processing on the semantic information vector and the tone feature vector to obtain a tone cross feature vector; inputting the tone cross feature vector into a preset tone conversion model for tone conversion to obtain target audio, wherein the target audio is audio with the target tone and the original tone of the audio data to be converted. The application is suitable for converting tone.

This invention discloses a method and system for time-scale conversion of parameters in high-frequency real-time flood forecasting models. Addressing the technical shortcomings of hydrological model parameters in minute-level, sub-hourly, and hourly high-frequency forecasting scenarios, such as significant time-scale effects, low efficiency of multi-scale independent calibration, and poor accuracy of direct parameter transfer, this invention constructs multi-time-scale hydrological and meteorological parameter sample sets, establishes a parameter time-scale sensitivity function to screen sensitive parameters, structurally identifies parameter scale variation patterns, constructs quantitative conversion relationships that consider both hydrological physical meaning and value boundaries, forms an expandable parameter conversion knowledge base, and achieves cross-scale and cross-basin adaptive parameter migration, ultimately completing high-frequency real-time flood forecasting and accuracy verification. This invention can quickly achieve multi-scale parameter conversion at 15-minute, 30-minute, and 1-hour scales, with the converted forecast NSE consistently above 0.9, significantly reducing parameter calibration workload and improving the deployment efficiency and simulation accuracy of high-frequency flood forecasts.

The utility model discloses a high-speed data acquisition and storage device, and relates to the technical field of data acquisition and storage, and the device comprises a CML interface which is used for obtaining video data; the serial-to-parallel conversion circuit is connected with the CML interface, and the serial-to-parallel conversion circuit is used for converting a serial signal input by the CML interface into a parallel signal; the main control chip is connected with the serial-parallel conversion circuit, and the main control chip adopts an XC7Z045 processor with a ZYNQ framework; and the storage unit is connected with the main control chip and is used for storing the video data. According to the invention, the CML interface is adopted to collect video data, and compared with an existing LVDS interface, the CML interface is greatly improved in sampling rate and conversion precision.

The application provides a digital-to-analog conversion circuit, a debugging method and a circuit debugging system. The digital-to-analog conversion circuit is used for converting input digital quantity into output analog quantity. The digital-to-analog conversion circuit comprises a conversion network, an analog switch and a summation circuit. The conversion network is a ladder network. The ladder network comprises a plurality of bit conversion units with consistent parameters. The digital-to-analog conversion circuit further comprises a first switch array. The plurality of bit conversion units with consistent parameters are cascaded with each other through the first switch array. The first switch array is used for switching the cascading sequence between the bit conversion units. The debugging method of the digital-to-analog conversion circuit is used for the digital-to-analog conversion circuit. The debugging system comprises the digital-to-analog conversion circuit, a reference power supply, a measurer and a control unit. The digital-to-analog conversion circuit, the debugging method and the circuit debugging system of the application have high conversion precision and are convenient to manufacture.

A photonic analog-to-digital conversion system and chip based on wavelength multiplexing and optical capture, which utilizes a wavelength division multiplexer to combine N continuous lights of different wavelengths into one light, loads sampled analog signals on the N light paths, makes the analog signals on the light paths of different wavelengths obtain different time delay amounts through a time delay control module, the time delay amount difference of adjacent two light paths is equal, and the time domain discretization of N equal time interval analog signals is realized by using an optical capture module. The present application utilizes passive devices such as a wavelength division multiplexer, greatly reduces the number of active devices such as electro-optic modulators, can effectively reduce the chip complexity and link loss, and thus improves the performance of the photonic analog-to-digital conversion chip. The use of passive devices instead of active devices can effectively reduce the chip power consumption and improve the stability. The chip can increase the number of continuous laser light sources and the channel number of the wavelength division multiplexer / demultiplexer through simple configuration, and can multiply the sampling rate of the photonic analog-to-digital conversion chip, and has the ability of large-scale expansion.