1083results about How to "Improve scanning efficiency" patented technology

The invention discloses a fast manufacturing method of three-beam laser compound scanning. The method comprises the following steps of: firstly utilizing long-wavelength laser (CO2 laser) for preheating the metal powder, then utilizing short-wavelength laser (YAG or optical fiber laser) for fusing the metal powder and finally utilizing long-wavelength laser (CO2 laser) to carry out heat treatment to the frozen metal. The fast manufacturing method uses the three beams of laser to carry out compound scanning, namely uses long-wavelength laser to preheat, short-wavelength laser to fuse and then long-wavelength laser to carry out heat treatment, can realize the compound process of preheating, fusion and heat treatment of the metal powder. The three beams of laser compound scanning mode can reduce internal stress of the metal part, avoid warping and cracking, improve organization and improve performance.

The invention provides a security detection method and system of an Android application program, aiming to solve the problems of an antivirus method of the existing Android platform that the scanning speed is slow and the false positive ratio is high. The method comprises the following steps of: scanning an Android installation package and extracting appointed characteristic information from the Android installation package; finding characteristic records which are matched with the appointed single characteristic information or a combination thereof from a pre-arranged security identification base, wherein the security identification base comprises the characteristic records and security grades corresponding to the characteristic records, and each characteristic record comprises single characteristic information or the combination of the characteristic information; and respectively displaying the security grade corresponding to the found characteristic records in a security detection result of the Android installation package. The security detection method and system of the Android application program disclosed by the invention have the advantages of fast scanning speed and high searching and killing accuracy.

The invention provides a security detection method and system of an Android application program, solving the problems of low scanning speed and high false alarm rate of the traditional virus killing method of an Android platform. The security detection method comprises the steps of: scanning an Android installation package, extracting appointed characteristic information from the Android installation package; uploading the appointed characteristic information to a server, searching a characteristic record matched with appointed single characteristic information or combination from a security identification base preset in the server; and receiving a security detection result returned by the server aiming at the Android installation package, and displaying on a client end user interface, wherein the security detection result includes a security level corresponding to the characteristic record searched by the server. The client end detection is combined with the server detection, thus the security detection method is high in scanning speed and high in killing accuracy rate.

A method for processing multiple digital images using an imaging input device so as to reduce bleeding of edges of the multiple digital images by determining the boundaries of each of the digital images, including detecting a boundary of a first image; detecting a boundary of a second image; determining an overlap between the detected boundaries of the first image and second images; calculating the overlap between the first and second images and modeling a third image from the calculated overlap of the first and second images wherein the third image contains at least said first and second images and represents a depiction of said first and second images without an overlap between said first and second images.

The invention discloses an AP (application process) switching method used in WiFi (wireless fidelity) communication, and provides a WiFi access point switching method for dynamically adjusting threshold values in real time. The AP switching method is characterized in that after a mobile terminal detects received signal intensity of a currently connected AP, the signal intensity is compared to a scanning threshold value, scanning is started if the signal intensity is lower than the scanning threshold value, and scanned adjacent AP information is dynamically stored; the mobile terminal continues detecting received signal intensity of the currently connected AP, the signal intensity is compared to a switching threshold value, AP switching is realized if the signal intensity is lower than the switching threshold value, and a switching object is an AP access point with the highest stored signal intensity; and the scanning threshold value and the switching threshold value are adjusted simultaneously. By the AP switching method, the mobile terminal can be quickly switched to the optimal AP when moving within a coverage area of a WiFi network, and satisfactory access service and communication effect are obtained.

A method for the phylogenetic identification of indigenous anaerobic denitrifying bacterial species in an oil well is described. The method avoids the process of enrichment of microbial samples.

The invention relates to a three-dimensional scanning system, which is used for obtaining three-dimensional stripe point cloud data of a detected object. The system comprises: a light source, which successively and alternately projects multiple speckle patterns and stripe patterns on the detected object; a left camera and a right camera, which synchronously collect left and right speckle images and left and right stripe images of the detected object; a speckle data and sign point data reconstruction module, which obtains speckle three-dimensional data and sign point three-dimensional data on the basis of the speckle images; a stripe matching module, which conducts back projection onto the left and right stripe images according to the speckle three-dimensional data and the sign point three-dimensional data, and guides matching for stripes of the left and right stripe images; and a three-dimensional reconstruction module, which reconstructs the corresponding matched stripes of the left and right stripe images into three-dimensional stripe point cloud data. The invention also provides a scanning method of the three-dimensional scanning system.

The invention discloses a laser scanning method for laser melting in a selected area. The laser scanning method comprises the following steps: dividing a workpiece area into a plurality of latticed regular triangles with side length being 1mm-10mm and a plurality of irregular figures at borders according to the cross section information of a workpiece, taking a gap G between the adjacent figures from -1mm to 1mm; scanning the irregular figures at the borders as the zoning regular triangles and adopting an equidistant scanning line for successively finishing the zoning figure scanning; according to the zoning direction, adopting the equidistant scanning line for successively finishing the gap scanning; scanning along a practical outline of the workpiece or the outline deviating within 1mm inward or outward to the practical outline of the workpiece according to the requirement, or repeatedly scanning along a plurality of outlines deviating from the practical outline of the workpiece within 1mm, thereby finishing the cross section canning for the workpiece. According to the scanning method provided by the invention, the scattering effect of residual stress in the workpiece during a laser scanning process is improved, the laser scanning direction during the scanning process does not need to be repeatedly changed, the scanning efficiency is high, the technique control is simple, and the compactness and the precision of the workpiece are ensured.

An embodiment of the invention provides a scanning access point in a wireless fidelity network, a channel selecting method, a set of equipment and a system thereof. The channel selecting method comprises the following steps: determining a first channel in the WiFi network by a site according to a preset role related with a service set identification SSID of a target access point AP; and scanning by the site on the first channel so as to scann the target AP when the target AP exists and the first channel is determined and used according to the preset role. According to the scanning access point in the wireless fidelity network, the channel selecting method, the equipment and the system, because the STA determines the first channel according to the preset role, the target AP selects the channel according to the preset role, when the target AP use the first channel, the STA can scan the target AP in the first-time channel scanning, and the scanning process has pertinency, thereby greatly improving the scanning efficiency.

The disclosure is directed to polyelectrolyte complex nanoparticles that can be used to deliver agents deep into hydrocarbon reservoirs. Methods of making and using said polyelectrolyte complex nanoparticles are also provided.

In bi-directional imaging, such as bi-directional printing, a galvanometric oscillator scans a light beam through a scan path across an imaging window. A controller enables transmission of video data to a modulator when the light beam is positioned for imaging on the imaging window. Video data is transmitted to the modulator when the light beam is traveling in a forward direction or a reverse direction across the imaging window, whereby a modulated light beam is capable of producing an image when traveling in the forward or reverse directions.

Design and preparation of a smart system, including a hydrophilic polymer nanoparticle as a core material and a hydrophilic-hydrophobic block copolymer as a coating nanolayer for use in a smart core-shell nanostructure flooding during enhanced oil recovery (EOR) process. The hydrophilic polymers are prepared by an inverse emulsion method. The central core of this nanostructure includes hydrophilic polymer. The nanolayer can be a surfmer. The binary properties of the shell and hydrophilic polymers increase the water viscosity in the water-oil interface and enhance oil recovery.

The invention relates to a warehouse system based on an AGV delivering and loading small handcart and a warehousing and warehouse-out method. The loading small handcart is a tool outside a warehouse and for delivering goods and a carrier inside the warehouse and for loading the goods, and the goods can be scanned on the loading small handcart and do not need to be scanned gradually by manual work; and when the goods are out of the warehouse, the loading small handcart is directly delivered to an entrance of the warehouse through an AGV trolley to be wholly scanned, when the goods of the loading small handcart are completely unloaded, the loading small handcart is placed at a gate of the warehouse so as to be used when the goods are stored, and thus a good in-out warehouse cycle is formed. Compared with tradition manual goods storing and taking or other warehousing systems or methods in the prior art, the storing steps can be reduced, and the automated degree is high, so that the whole logistical warehousing process is neat, efficient and convenient; when goods allocation of the warehouse is changed, only a navigation magnetic stripe and a RFID positioning piece need to be planned and arranged again, and due to the fact that the navigation magnetic stripe and the RFID positioning piece are adhered to the ground, no damage is caused to the ground; and the warehouse is very convenient to use for other purposes.

The invention discloses a method for quickly identifying a networked industrial control device. The method is characterized by comprising a pre-scanning stage and an industrial control device identification stage, wherein the pre-scanning stage comprises: uniformly allocating scanning tasks by using a distributed scanning mechanism, splitting a specified IP address segment, judging whether an IP host and a port survive by using a TCP stateless detector, and storing IP addresses of the survival IP host and the survival port in an IP buffer pool identified by the device, and the industrial control device identification stage comprises: obtaining the survival IP host and the port from the IP buffer pool, establishing a complete TCP connection, sending a specific industrial control protocol identification data packet of the port, waiting for the response of a server, returning a data packet by the networked industrial control device, analyzing the data packet, and matching the data packet with a fingerprint library of the industrial control device. According to the method disclosed by the invention, the distributed scanning technology is imported, segmented scanning is carried out by fully using scanning nodes, the resources of a computer are saved, the scanning efficiency is greatly improved, and meanwhile the survivability of the IP host and the industrial control port are clarified before the industrial control device is identified, thereby shortening the response delay time caused by the non-survival of the port.

The invention relates to the technical fields of foreign body invasion monitoring and laser scanning, in particular to a runway pavement monitoring device and method based on point cloud detection. According to the technical problem to be solved that a foreign body invades an airfield runway, so that taking off and landing of a flight are threatened, the three-dimensional laser scanning technique is mainly applied in combination with a video/image recognition device, the runway pavement monitoring device arranged outside the runway in an erected mode and the method are designed for monitoring the invading foreign body appearing on the airfield runway. Meanwhile, the device and the method can also be used for accurately measuring and timely feeding back the pavement flatness of the runway. The runway pavement monitoring device based on the point cloud detection comprises the structural design among at least one laser scanning device, at least one video camera, a processor and the like. The runway pavement monitoring device and method based on the point cloud detection are applied to the field of airfield runway plane invading body monitoring.

The 3D CT imaging method for large view field comprises: (1) taking first single-circular orbit cone-beam CT scanning to obtain the first digital ray projection image sequence; (2) removing the platform vertical the main ray with some distance to take the second CT scanning and obtain the second image sequence; (3) correcting former two images for dark current and inconsistency; (4) recording distance from ray source to detector, former moved distance and detector level channel number; (5) with the projection rearrangement algorithm in this invention, rearranging former two images into self-contained quasi-parallel image sequence; (6) with the quasi-parallel ray reconstructing algorithm in this invention, reconstructing the 3D CT image. This invention can enlarge the view area more than 3 times with high efficiency.

The invention discloses a three-dimensional surface topography measurement device based on one-dimensional Dammann grating. A one-dimensional Dammann grating is inserted between a collimated laser source and a measured object, and the measured object and a reference surface are placed on a Fourier transform plane of a collimating lens. A charge coupled device (CCD) receives structured light reflected by the object, and the imaging relative distance of reflecting points of the reference surface and the actual object surface on a CCD target surface is used for determining the relative distance between the reflecting point of the object surface and the reflecting point of the reference surface. The Dammann grating is used for equally dividing the light intensity of the light source into multiple parts so as to acquire high spatial resolution at the same time of realizing multi-point scanning. Moreover, because the relative distance of diffraction spots of each level of the Dammann grating is strictly fixed, the rotating error of a vibrating mirror during single-point scanning is furthest reduced. The device has high measurement precision and spatial resolution, greatly improves the scanning efficiency, and has important practical significance.

The invention discloses a method for online detecting an electronic element by a translational type micro focus CT (Computerized Tomography) detection device, and the method is realized as follows: when the detection is started, the electronic element is scanned by a conical ray beam generated by a ray generation device; and ray projection data is acquired by a ray detection and data acquisition device, and then is transmitted to a control and image processing system for imaging including digital radiation (DR) imaging and computerized tomography (CT) imaging. When the CT imaging is performed, the CT image can be reconstructed according to incomplete projection data acquired through ray scanning by the translational type conical beam and adopting translational type conical beam CT iterative reconstruction algorithm based on subdomain equalization and total variation minimization, so as to obtain a high quality three-dimensioanl CT image. The method is used for online detecting the electronic element on the production line with high precision, can perform amplification DR image and three-dimensional CT image for internal and external structures of the electronic element; the device has simple structure and high scanning efficiency; and further, material deficiency and assembly deficiency of the electronic element can be detected efficiently.