63 results about "Historical maps" patented technology

A method for coexistence of an orthogonal frequency division multiple access (OFDMA) receiver (117) such as a WiMAX receiver with a synchronous frame-based transmitter (115) such as a Bluetooth transmitter within a mobile station (110) receives an estimated media access protocol (MAP′) signal indicating when a MAP message is expected to be received by the OFDMA receiver (117) and uses it at a Bluetooth shutdown signal (190) at least when a MAP message is expected to be received. The MAP′ signal can be taken directly from the ODFMA transceiver (117) or it may be produced through analysis of a receiver-enable (RXE) signal that includes not only MAP symbols but also downlink data symbols. The RXE signal can be analyzed using interrupt-and-timer, Fast Fourier Transform, covariance, and/or delay-locked loop techniques to extract historical MAP symbol information and generate expected MAP symbol information. Shutting down a Bluetooth transmitter during expected MAP message receipt permits the OFDMA receiver to maintain synchronicity with an access point while not requiring the Bluetooth transmitter to shut down every time the OFDMA receiver expects to receive an OFDMA symbol.

The invention discloses a method, a device and a system for displaying map information. One specific implementation way of the method comprises the following steps that: detecting a selection operation of a current user for preset operation identification in a preset operation identification set; responding when the above selection operation is detected, and determining an operation indicated by the preset operation identification selected by the current user as a target operation; responding when the above target operation is the checking of historical map information, and sending a historical map information acquisition request which comprises the current user identification of the current user, wherein the above server responds to the above historical map information acquisition request and obtains the historical map information set of the above current user; and according to a target map and the historical map information set, which is received from the above server, of the above current user, combining with the current user map which presents the current user. By use of the implementation way, the self-defined map of the user is displayed, and display contents displayed by the map information are enriched.

The invention relates to an urban historical map restoration method based on spatial grid hierarchical positioning and belongs to the technical field of urban planning. The method is based on a computer in combination with a spatial topology algorithm, and comprises the steps of taking coordinate reference points in the historical map and actual archaeology point coordinates as fixed reference points by use of the CAD (Computer Aided Design) software, obtaining index data and building a topology correction model, performing grid correction on the spatial coordinates of spatial features in the urban historical map which is age-old and relatively low in accuracy, and automatically an engineering drawing that can be directly used for statutory plans such as the urban plan of conservation of historic cultural cities and the plan of conversion of historical and cultural blocks by use of drawing equipment. The urban historical map restoration method is used for overcoming the shortages of subjectivity and randomness in decision making by use of the intellectual activities of the human brain for urban historical map interpretation in the urban construction engineering, and consequently, the working efficiency is greatly improved and higher accuracy can be provided.

A method for navigation comprises constructing a current map that includes two-dimensional or three dimensional representations of an area, detecting one or more edge features on the current map, and generating a first fine-edge map based on the edge features. The method further comprises retrieving a historical map that includes two-dimensional or three dimensional representations of the area, detecting one or more edge features on the historical map, and generating a second fine-edge map based on the edge features. Thereafter, a coarse version of the current map is generated from the first fine-edge map, and a coarse version of the historical map is generated from the second fine-edge map. The coarse versions of the current and historical maps are then correlated to determine a first position and orientation. The first fine-edge map is then correlated with the second fine-edge map to determine a second, more accurate, position and orientation.

The invention discloses a historical map utilization method based on a visual robot. The historical map utilization method comprises the following steps of 1, controlling the visual robot to continuously acquire images of preset road signs in a preset working area and acquire road sign information of the preset road signs; 2, transmitting the acquired road sign information to a first map positioning system and a second map positioning system simultaneously; 3, controlling the first map positioning system and the second map positioning system to process corresponding road sign information so asto obtain first pose information and second pose information; 4, selecting the first pose information and the second pose information under the same preset road sign, and calculating a transformationrelation between the first pose information and the second pose information; and 5, controlling a historical map to perform corresponding transformation operation according to the transformation relation, and using the transformed historical map as a reference for subsequent motion control. By controlling the historical map to be matched with actual physical environment, the method improves the intelligent degree of path planning.

The invention discloses a map updating control method and system for visual robots. The method includes the following steps: step 1, obtaining map attribute measurement data corresponding to a currentmap of a preset working area; step 2, judging whether the current map and a pre-stored historical map meet a preset matching degree according to the map attribute measurement data when that a visualrobot traverses the preset working area for one time is detected, determining to preserve the current map, otherwise, determining to not preserve the current map, and preserving the pre-stored historical map; and step3, writing map attribute information corresponding to the current map into a map storage medium to update the map attribute information corresponding to the historical map when determining to preserve the map attribute information corresponding to the current map. Thus, the familiar degrees of the robot on the working area can be enhanced, and the learning capabilities of the robot on the preset working area can be improved.

The embodiments of the invention disclose a method for reserving a room online, a device for reserving a room online and an apparatus. The method includes the following steps that: room use data corresponding to an order is obtained; whether the inventory of a merchant is sufficient is determined according to the room use data corresponding to the order and predetermined merchant room status data,wherein the merchant room status data are determined according to the historical sales data of the merchant, or are determined according to at least one kind of data selected from the historical sales data, user historical browsing data, user historical query data, user historical store visit data, and historical map data; and the reservation result of the order is determined according to a determination result. With the method, device and apparatus provided by the embodiments of the invention adopted, an online reservation platform improves the efficiency of order reservation by maintaininghigh-accuracy merchant room status data.

The invention discloses a crop classification method based on time sequence NDVI and LST. The method comprises the following steps: 1) obtaining remote sensing image data containing a red light band,a near infrared band and a thermal infrared band, constructing a remote sensing image time sequence covering a crop growth period, and calculating to obtain an NDVI time sequence and an LST time sequence; (2) in order to enhance the difference between different crops, for each LST in step 1), firstly calculating LST mean vaue of LST, and then using the mean value to adjust (the formula is ALST(i,j)=LST(i,j)-LST mean, with i, j being the row number and column number of each pixel respectively, and finally supermisoing all the adjusted ALSTs in chronological order to form an ALST time series.; 3) obtaining crop sample data through a field survey or historical map, and 4) taking the NDVI time sequence, the ALST time sequence and the sample data as input, and classifying the crops in the research area by adopting a random forest classifier to form a crop classification result map.

An overlapped historical map features that the maps of same geographic region at different historical periods are drawn on different transparent pages by same proportion rule, and the different maps on different transparent pages are overlapped to directly understand the variation of said geographic region with different historical periods.

The invention discloses a crop classification method based on a sentinel No.1 RVI time sequence. The method comprises the following steps: 1) obtaining VV-VH polarization data in an IW mode of a sentinel No.1 satellite, and constructing a remote sensing image time sequence covering the growth cycle of crops; 2) constructing an RVI index (the formula is RVI = sigma VH/sigma VV) based on the VV-VH polarization data of each period, and then performing integration to form an RVI time sequence; 3) obtaining crop sample data through field investigation or historical maps, and 4) classifying crops ina research area by taking the RVI time sequence and the sample data as input and adopting a random forest classifier to form a crop classification result map.

The invention discloses a guiding method and device for a voice packet recording function, equipment and a computer storage medium, and relates to the field of big data. According to the specific implementation scheme, the method comprises the following steps: recognizing a target user with a voice packet recording requirement by using historical map use behaviors of a map user; and identifying a scene in which the target user uses the client, and if the scene accords with a voice packet recording scene, sending first guide information of a voice packet recording function to the client. According to the invention, accurate guidance of a voice packet recording function is realized, and excessive disturbance to a user is reduced.

The embodiment of the invention discloses a map processing method and device for a cleaning robot, equipment and a storage medium. The method comprises the steps: after receiving of a map display instruction, acquiring historical maps of a first cleaning robot and displaying the map; selecting the historical map from the acquired historical maps according to a map selection instruction; marking the selected historical map as the current map of the first cleaning robot and/or a second cleaning robot. The second cleaning robot and the first cleaning robot share the map. According to the technical scheme provided by the embodiment of the invention, a problem of low cleaning efficiency caused by map overlapping can be solved.

The invention, which belongs to the demonstration apparatus in the technical field of the teaching appliance, discloses a full-touch intelligent excellent-image-sound-contained historical map teaching demonstration apparatus with a teaching board. The invention aims at providing a full-touch intelligent excellent-image-sound-contained historical map teaching demonstration apparatus with a teaching board, wherein the apparatus has a good image with an excellent sound. The apparatus comprises a pedestal, a support frame, and a cross bar. A display device is connected to the cross bar; and a key selection zone and an image display zone are arranged on a display panel of the display device. And a microprocessor, a key trigger module, a display card, a hard disk storage device, a loudspeaker, and a historical image display module are also arranged at the display device; the key trigger module, the display card, and the hard disk storage device are connected with the microprocessor electrically; the loudspeaker and the historical image display module are connected with the display card electrically. Besides, a teaching board is connected to the other side of the display device. The apparatus is suitable for demonstration of teaching.

The invention, which belongs to the demonstration apparatus in the technical field of the teaching appliance, discloses a full-touch intelligent folding type historical map teaching demonstration apparatus with a teaching board. The invention aims at providing a full-touch intelligent folding type historical map teaching demonstration apparatus with teaching board. The apparatus comprises a pedestal, a support frame, and a cross bar. The support frame being a folding type support frame includes a connecting branch pipe assembly and a hinging assembly; the connecting branch pipe assembly contains an upper connecting branch pipe and a lower connecting branch pipe; and the hinging assembly includes an upper casing pipe, a lower casing pipe, an adjusting spring, and a loosening adjusting knob. Besides, a display device is connected to the cross bar and a teaching board is connected to the other side of the display device. The apparatus is suitable for demonstration of teaching.

The invention provides a map construction method and device based on SLAM. The method comprises the steps: checking whether a currently collected image meets a preset key frame image condition or not, and determining that the image is a first key frame if the currently collected image meets the preset key frame image condition; inserting the first key frame into a constructed first SLAM map, wherein a historical SLAM map associated with the first SLAM map is acquired, and the historical SLAM map and the first SLAM map correspond to the same physical area; judging whether a first SLAM map needs to be corrected or not according to the historical SLAM map; if so, correcting the first SLAM map according to the historical SLAM map. By applying the method, the SLAM map is constructed for the dynamic scene, and the constructed SLAM map is corrected according to the historical SLAM map of the same physical area in the process of constructing the SLAM map, so that the accumulative error of the constructed SLAM map can be reduced, and the long-term reusability and expandability of the constructed SLAM map are further improved.

The invention discloses a data synchronization method and device, equipment, a server and a storage medium. The method comprises the steps of acquiring an identification timestamp from a background server, acquiring the identification timestamp after the latest timestamp is identified, wherein the latest timestamp is the time when a target robot carries out map data synchronization for the last time; sorting the historical map data list to obtain a sorted historical map data list, wherein the generation time of the historical map data included in the sorted historical map data list is later than the identification timestamp; and repeatedly selecting a piece of historical map data with the earliest generation time from the sorted historical map data list, sending the historical map data with the earliest generation time to the background server, and realizing map data synchronization according to a return value obtained from the background server. By means of the method, repeated synchronization of data can be effectively avoided.

The invention, which belongs to the demonstration apparatus in the technical field of the teaching appliance, discloses a full-touch intelligent excellent-image-sound-contained historical map teaching demonstration apparatus. The invention aims at providing a full-touch intelligent excellent-image-sound-contained historical map teaching demonstration apparatus having good images with excellent sounds. The apparatus comprises a pedestal, a support frame, and a cross bar. A display device is connected to the cross bar; and a key selection zone and an image display zone are arranged on a display panel of the display device. And a microprocessor, a key trigger module, a display card, a hard disk storage device, a loudspeaker, and a historical image display module are also arranged at the display device; the key trigger module, the display card, and the hard disk storage device are connected with the microprocessor electrically; the loudspeaker and the historical image display module are connected with the display card electrically. The apparatus is suitable for demonstration of teaching.