Video positioning and parameter computation method based on picture sectioning
Technical Field The invention relates to digital video monitoring implementing Image positioning and parameter computation method, thereby realizing the video background related information feedback a method to the operator. Background Art As the video monitor the development of communication technology, remote video monitoring system in the various trades a wide range of application. By a remote video digital monitoring system can realize remote centralized monitoring, for forest, fairway, border and other occasions, the system can show its power. Less can be realized over a wide range of human realize monitoring. For this type of system, generally the monitoring center in the management centre, monitoring centre attenbant, attenbant through the operation of the monitoring system (mainly through the control keyboard or computer) the monitoring of the various on-site. However, as this kind of Image monitoring system monitoring the background range is wide and very similar between every picture, relying solely on the target itself to judge the scene characteristics of the actual geographical position, is relatively difficult, especially in night is more difficult, all the pictures are [...] , even if individual places the difference can be seen, at night are also the same. Pass through the picture no from the resolution of the actual geographical position, not to say that it is necessary to judge the azimuth, distance, size, and the like. In such cases (especially in night), even if the situation is found, control scene switching and often, by comparing the picture of the more familiar with the accident location to position, and the position of the determined also is not necessarily accurate. There are also system adopts the video monitoring and GIS system positioning and link to calculate the parameters, a very high system cost; b to the needs of GIS data is very large. This method only needs very little input, extremely small parameter setting can realize the positioning and parameter computation. Content of the invention The invention is based on the realization of a multi-level menu Image positioning and parameter computation method, through this method, the video background information can be timely feedback to an operator. This method mainly comprises the following points: 1, the monitoring view; 2, the division of the monitoring picture, picture segmentation and field of vision of the camera an associated through a preset point; 3, final picture parameter definition, comprising a horizontal start angle, the end angle, the distance from the monitoring camera recently, the most far monitoring point distance from the camera, regional alias; final stage in the picture due to regional generally smaller, can be very clear marking, the distance between the control points and the distance is also relatively easy to obtain, at the end of the picture in the picture parameter definition. 4, define a target parameter calculation method, mainly relates to an angle calculation, the calculation of the distance of the camera distance. Through this method, in the monitoring process can be realized, the system automatically according to the requirement of an operation of the monitoring information (geographical location, distance) feedback out, special for similar forest fire, border, fairway, fire and other industries has positive sense is even more. The operator through the remote Image monitoring system when the find that the situation, can be rapidly, accurately judge the relevant geographic information, timely command scheduling. Description of drawings Figure 1: vision segmentation map Figure 2: picture segmentation map Figure 3: picture parameter definition map Mode of execution Specific embodiments of this method are as follows: 1, the monitoring view, first needs to be done on the field of vision of the video camera is to plan and cut apart. As shown in Figure 1, each of which is the monitoring range of the video camera to the camera as the center round. According to a certain angle before the visual field of the camera is divided into a number of independent level sub-field, according to the needs of monitoring the sub-visual field angle further divided into smaller secondary visual field, can also be according to the pitching angle of the camera to the visual field is to be divided, so as to be divided into the whole visual field of the camera as shown in Figure 1 the structure; the last stage in the picture monitor clear vision can meet the requirements of the monitoring, the overlap portion between the smaller field of view, the better. 2, the division of the monitoring picture, will be above the level of the field-of-view Image displayed on the display unit of the computer, the current Image on the unique identification and-named. As shown in Figure 2, the entire screen is divided into a number of equal parts, each sub-picture can be a one or a plurality of divided portion, the sub-screen corresponding to the sub-field, one-to-one correspondence can be all according to need, can also be part of the one-to-one correspondence, and the lower sub-field in the current-level visual field coordinate marking out the division of, and to mark the lower field of view and-named, and to the lower field of view a recorded, so until the final vision; system through the camera preset point of the sub-picture with the sub-field corresponding to one by one, that is, for any one sub-field of vision (not-level) are corresponding to one picture, corresponding to the camera and to a preset point. 3, final sections parameter definition, the picture switching to the final picture, as shown in Figure 3, corresponding to the picture of the following parameters of the picture corresponding to the: initial angle (the starting line by the monitoring party user-defined), angle end, recent distance (distance camera mounting position), the farthest distance (sometimes the most long-distance is very difficult to determine the distance from the camera center position). 4, define a target parameter calculation method, the level at the end of the calculation of parameters in the visual field, mainly comprising the following: A, according to picture parameter determining the coordinates of the name of the picture; 1st step, whether the picture is judged at the end of the current stage picture, if it is the final picture, the current picture can be the name of the return and related information, complete; 2nd step, at the end of the level of the current picture is not the case of the picture, according to the current picture in picture in the divided information, the coordinate of the selected sub-picture, the picture can judge name; B, in the picture according to the parameter determining the coordinates of the angle of the position of the coordinates; Z=px*(b-a)/w+a In the formula: z:a point opposite to the screen in the picture the most left (right) side of the angle, referring to Figure 3 Px: needs to be calculated at this point of the screen relative to the left-most (right) side of the pixel width, referring to Figure 3 A: picture left-most (right) side of the angle of relative to the initial position, referring to Figure 3 B: picture the right (left) side of the angle of relative to the initial position, referring to Figure 3 W: pixel width of the screen C, according to the parameter determining the coordinates of the picture in the coordinate distance of the distance of the camera; L=py * (X2-X1)/ h+ X1 In the formula: L: distance at a certain point in the distance of the camera mounting point, korsh picture 3 Py: this point of the needs to be calculated relative to the screen pixel height of the bottom of the, referring to Figure 3 X2: the distance between the highest point of the picture from the camera (this point is difficult to identify circumstances, can adopt the center point), referring to Figure 3 X1: picture the distance of the camera bottom edge distance, korsh picture 3 H: pixel height of the screen. 5, on running interface: the picture display on screen, will be provided with a sub-picture of a parting line of each sub-picture is also displayed at the same time, which is convenient for the operator to carry out the operation, with the sub-picture Image, according to the current point is defined to the lower levels the position switching control command of the picture. 6, on the overlap between every picture: one is the better the smaller the overlapping parts, , in the field of view through the field of vision, the definition of the boundaries between; the second is in the above definition of the calculation formula of the four sides of the picture is moved in the direction of the center value, the elimination of the overlap portion; three is to tell the operator if the operation, not to click-picture edge in order to try to get the attribute of the picture, if the object is located just at the divided picture, can be used for the two sides of the picture attribute as a reference point. 7, description on the accuracy of the calculation, the accuracy of this method are as follows: 1) lying at the end of the smaller the change in the picture, the higher the accuracy of the calculation; 2) a final picture parameter input more accurately, the higher the accuracy of the calculation. The invention relates to a method based on a multilevel split screen for image location and parameter calculation, which mainly comprises splitting a monitoring visual field, splitting a monitoring screen, linking the split screen with the split visual field at a predetermined spot of a camera, defining the parameters of the last level screen (mainly comprising a horizontal initial angle, an end angle, a distance closest to the camera monitoring point, a distance farthest to the camera monitoring point and a region name) and defining a calculation method of the target parameters (mainly involving the calculation of angles and distances to the camera). With the inventive method, the system can automatically feedback the information (geographical position and distance) of the monitored point according to the request of the operator during the monitoring process, and is significant in the fields of forest-fire prevention, frontier defense, water way and fire control, as well as is helpful for the operator to rapidly and accurately judge the related geographical information and take command and control in time when detecting abnormal conditions by the long-distance image monitoring system. 1. Based on picture divided video positioning and parameter calculation method, it is characterized for multi-stage division and picture, and through the field of vision of the video camera and the preset point to picture corresponds to; then, the last stage of the picture definition parameters, and define a set of parameter calculation method. 2. Authority to request 1 the vision segmentation is characterized in that: in the center of the camera, according to a certain angle will the whole visual field of vision is divided into a plurality of levels, then to a level sub-field can also be divided in accordance with the angle or elevation angle, until meeting the need for monitoring and management. 3. Authority to request 1 the picture segmentation is characterized in that: in accordance with authority to request 2 at the level of the divided Image forming for a computer display view, the whole picture is divided into a number of equal parts, each sub-picture can be a one or a plurality of divided portion, the sub-picture with the field of view correspond to the sub-field, one-to-one correspondence can be all according to need, can also be part of the one-to-one correspondence; picture dividing according to the above method has been to the final field of vision, through the field of vision of the picture and the preset point of the camera to be one by one. Then the various pictures are named (-name request is unique), and to the lower field of view a recorded. 4. Authority to request 1 wherein the final stage picture parameter (field of view) including the picture start angle, the end angle, the distance of the distance from the camera position, the distance from the camera (in the long-distance more acknowledgement, the distance can be taken the center point). 5. Authority to request 1 the a calculation method comprises: according to picture the coordinates of the picture in the name of the parameter is determined, according to the parameters in the picture the coordinates of the coordinates of the position of the determined angle, according to the parameter determining the coordinates of the picture in the coordinate distance of the distance of the camera, picture name. 6. Power to require 5 the coordinates of the picture based on the picture in the name of the parameter determining method is as follows: 1st step, whether the picture is judged at the end of the current stage picture, if it is the final picture, the current picture can be the name of the return and related information, complete; 2nd step, at the end of the level of the current picture is not the case of the picture, according to the current picture in picture in the divided information, the coordinate of the selected sub-picture, the name of the picture can be judged. 7. Power to require 5 in the picture of the according to the parameter determining the coordinates of the coordinates of the position of the angle counting method is as follows: Z=px*(b-a)/w+a In the formula: z:a point opposite to the screen in the picture the most left (or right) side of the angle Px: needs to be calculated relative to the screen the point of the most left-hand side of the pixel width A: picture left-most (or right) angle relative to the initial position of the edge B: picture the right (or left) side relative to the angle of initial position W: pixel width of the screen. 8. Power to require 5 in the picture of the according to the parameter determining the coordinates of the coordinates of the distance the method for calculating the distance of the camera is as follows: L=py * (X2-X1)/ h+ X1 In the formula: L: distance at a certain point in the distance of the camera mounting point Py: this point of the needs to be calculated relative to the screen pixel height of the bottom of the X2: the distance between the highest point of the picture from the camera (this point is difficult to identify circumstances, can adopt the center-point) X1: picture the distance of the camera bottom edge distance H: pixel height of the screen. 9. Power to require 3 dividing the picture, the picture of the various links that may exist between the overlapping, on the overlap portion, has the following points: one is the better the smaller the overlapping parts, , in the field of view through the field of vision, the definition of the boundaries between; the second is in the above definition of the calculation formula of the four sides of the picture is moved in the direction of the center value, the elimination of the overlap portion; three is to tell the operator if the operation, not to click-picture edge in order to try to get the attribute of the picture, if the object is located just at the divided picture, can be used for the two sides of the picture attribute as a reference point. 10. Power to require 3 the picture dividing, the picture is displayed on screen, need to be provided with a sub-picture of a parting line of each sub-picture is also displayed at the same time, which is convenient for the operator to carry out the operation; the picture of the picture to the belt, according to the current point is defined to the lower levels the position switching control command of the picture.