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30results about How to "Avoid ringing" patented technology

Infrared image and visible image fusion method based on guide filtering

The invention provides an infrared image and visible image fusion method based on guide filtering. The method comprises the steps of: firstly, expanding the guide filtering to multiple scales, and performing multi-scale decomposition on an infrared image and a visible image by using the multi-scale guide filtering, so as to obtain a low-frequency subband and a high-frequency subband; performing nonsubsampled directional filtering on the high-frequency subband, so as to obtain a directional subband coefficient; applying different fusion rules to the directional subband coefficient and a low-frequency subband coefficient, so as to obtain the corresponding directional subband coefficient and the low-frequency subband coefficient after fusion, and finally, performing directional filtering reconstruction and multi-scale reverse transformation based on the guide filtering, so as to obtain a final fusion image. According to a fusion result obtained by adopting the method, the edge and thermal radiation characteristics of an infrared image object are preferably kept, scene details of the visible image can be preferably reserved, and the information content of a fusion image is increased, so that the edge and details of the fusion image are enriched.
Owner:ORDNANCE TECH RES INST OF THE GENERAL ARMAMENT DEPT PLA

Real-time color image filtering method based on nonlocal domain transformation

InactiveCN103400359AReduce complexityMeet processing time requirementsImage enhancementFilter algorithmColor image filtering
The invention discloses a real-time color image filtering method based on nonlocal domain transformation. The method comprises the following steps: using a two-dimensional color image as a two-dimensional manifold on a five-dimensional vector space, and defining distance-weighted keeping transformation to obtain a multi-channel weighted isometric function; using recursive filtering to realize one-dimensional nonlocal domain transformation filtering of linear time; conducting separated one-dimensional nonlocal domain transformation filtering to the two-dimensional color image. The nonlocal domain transformation method can effectively involve nonlocal information into an image filtering algorithm. Under the premise that a small amount of computation is added, a high-quality filtering image is effectively obtained, and meanwhile the two aspects of requirements that the edge information in the image is not fuzzy are taken into account. A single color (or gray) image is adopted as an input source, the algorithm complexity is lower, the filtering effect is good, and a variety of computer vision application requirements can be met. The method is especially suitable for image detail enhancement, picture stylizing, image colorizing and pencil drawing conversion.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Hybrid loading dual-polarization ground penetrating radar array antenna

ActiveCN112271461AAvoid ringingAvoid technical problems with incomplete detection of azimuthsParticular array feeding systemsRadiating elements structural formsRadio frequencySingle polarization
The invention belongs to the related technical field of ground penetrating radars, and discloses a hybrid-loaded dual-polarized ground penetrating radar array antenna, which comprises a vertical polarized antenna group, a horizontal polarized antenna group and a radio frequency switch, the vertical polarization antenna group comprises a vertical polarization transmitting antenna and a vertical polarization receiving antenna of which the backs are provided with shielding cavities; the horizontally polarized antenna group comprises a horizontally polarized transmitting antenna and a horizontallypolarized receiving antenna of which the backs are provided with shielding cavities; and the vertical polarization transmitting antenna and the horizontal polarization transmitting antenna are connected through the radio frequency switch. And the vertical polarization receiving antenna is connected with the horizontal polarization receiving antenna through a radio frequency switch. The the detection capability of a conventional single-polarization ground penetrating radar can be effectively improved, more underground heteroplasmon information can be obtained, two radar images can be obtainedthrough one-time detection, and the detection efficiency is greatly improved.
Owner:HUAZHONG UNIV OF SCI & TECH

A Method for Fusion of Infrared Image and Visible Light Image Based on Guided Filtering

The invention provides an infrared image and visible image fusion method based on guide filtering. The method comprises the steps of: firstly, expanding the guide filtering to multiple scales, and performing multi-scale decomposition on an infrared image and a visible image by using the multi-scale guide filtering, so as to obtain a low-frequency subband and a high-frequency subband; performing nonsubsampled directional filtering on the high-frequency subband, so as to obtain a directional subband coefficient; applying different fusion rules to the directional subband coefficient and a low-frequency subband coefficient, so as to obtain the corresponding directional subband coefficient and the low-frequency subband coefficient after fusion, and finally, performing directional filtering reconstruction and multi-scale reverse transformation based on the guide filtering, so as to obtain a final fusion image. According to a fusion result obtained by adopting the method, the edge and thermal radiation characteristics of an infrared image object are preferably kept, scene details of the visible image can be preferably reserved, and the information content of a fusion image is increased, so that the edge and details of the fusion image are enriched.
Owner:ORDNANCE TECH RES INST OF THE GENERAL ARMAMENT DEPT PLA

Pulling-wire-type bicycle bell

The invention discloses a pulling-wire-type bicycle bell. The pulling-wire-type bicycle bell comprises a bicycle bell body, a brake handle and a pulling wire, wherein the bicycle barbell body and thebrake handle are installed on a handlebar, the bicycle barbell body comprises a bell dome, a shifting rod and a bell pulling structure, the bell dome is installed on the handlebar, and the shifting rod is installed on the bell dome; the bell pulling structure is installed on the handlebar, one end of the pulling wire penetrates through the bell pulling structure to be connected with the shifting rod, and the other end of the pulling wire is connected with the brake handle. By pinching and loosening the brake handle, the pulling wire drives the shifting rod to work, so that the bell dome givesout bell sound. The pulling-wire-type bicycle bell is simple in structure, the front bicycle brake handle which is low in using efficiency is utilized, the bicycle bell is controlled through the pulling wire of the brake handle, by pinching and loosening the brake handle, the bicycle bell body is controlled to give out sound, and the control over the bicycle bell body is more convenient and safer;when the bell is shifted, the palm does not need to be away from the brake handle at all, the situation that the part or whole of one hand of a rider is away from the handlebar to shift the bell is avoided, and hidden safety hazards that in the riding process, since the rider grips the handlebar with one hand, the balance is lost, and then accidents occur are eliminated.
Owner:武成阁

Power frequency interference filtering method for eliminating ringing

The invention discloses a power frequency interference filtering method, which is used for filtering power frequency interference with a mutated signal. The method comprises the following steps of: directly filtering an original signal of a nonmutationed part by using a wave trap, and taking the filtered signal as a system output; subtracting a result of previous filtering from an original signal of a mutated part, adding a previous filtering result section in a mode of end-to-end linear connection, filtering by using the wave trap, adding a result of the previous filtering to a filtering result, and subtracting a previous filtering result section in the mode of end-to-end linear connection; and repeating the process. In the electrocardiograph (ECG) detection process, 50 / 60 Hz power frequency interference covers the slight change in an original electrocardiograph, and influences an electrocardiograph diagnosis. When filtering the power frequency interference, the conventional linear time invariant wave trap triggers the ringing after a QRS complex wave, and influences the measurement of signals such as late potential and the like. The power frequency interference filtering method processes the signals of the input and output ends of the wave trap by utilizing detected QRS complex wave terminals, and traps the waves and avoids the ringing at the same time.
Owner:EDAN INSTR

Intelligent guardrail for urban traffic

The invention provides an intelligent guardrail for urban traffic, and relates to the technical field of guardrails. The intelligent guardrail comprises two guardrail stand columns and an anti-span structure, the ends, close to each other, of the two guardrail stand columns are fixedly connected with a connecting plate, the surface of the connecting plate is fixedly connected with a round rod, a rectangular frame is fixedly connected with the surface of each guardrail stand column, an anti-striding structure is arranged on the surface of each rectangular frame and comprises an ink storage box, the surface of each ink storage box is fixedly connected with the corresponding rectangular frame, a sliding frame is slidably connected to the surface of each guardrail stand column, a touch rod is fixedly connected with the end, close to the corresponding rectangular frame, of each sliding frame, a plastic shell is vertically and slidably connected to the inner wall of each ink storage box, and a sponge block is fixedly connected to the top end of each plastic shell. According to the invention, the probability that pedestrians climb over the guardrail is greatly reduced, so that the normalization of road traffic is improved, and the traffic accident rate is reduced.
Owner:常州百川新型护栏有限公司
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