CN111833279A - Fusion method of live-action hand-drawn map and electronic map - Google Patents
Fusion method of live-action hand-drawn map and electronic map Download PDFInfo
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- CN111833279A CN111833279A CN201910303083.4A CN201910303083A CN111833279A CN 111833279 A CN111833279 A CN 111833279A CN 201910303083 A CN201910303083 A CN 201910303083A CN 111833279 A CN111833279 A CN 111833279A
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- 238000000034 method Methods 0.000 claims description 18
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/14—Transformations for image registration, e.g. adjusting or mapping for alignment of images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20021—Dividing image into blocks, subimages or windows
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20212—Image combination
- G06T2207/20221—Image fusion; Image merging
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Abstract
The invention relates to a fusion method of a live-action hand-drawn map and an electronic map, which carries out map matching operation on the live-action hand-drawn map and the electronic map; adjusting the position of the live-action hand-drawn map on the electronic map; setting a loading level of the electronic map; starting loading, and adjusting pixels of the live-action hand-drawn map according to the loading level; slicing the live-action hand-drawn map according to the current level zoom, and segmenting the live-action hand-drawn map into a plurality of second tile units with the same size; calculating an X-axis pixel offset and a Y-axis pixel offset for each second tile element relative to the first tile element; translating the second tile element according to the X-axis pixel offset and the Y-axis pixel offset; determining the mercator coordinates of the second tile element; the second tile unit is correspondingly loaded on the first tile unit under the same ink card tray coordinate on the electronic map; judging whether the loading is finished, if so, finishing the loading; otherwise, the loading level is updated and then the loading is carried out again.
Description
Technical Field
The invention relates to the field of picture processing, in particular to a fusion method of a live-action hand-drawn map and an electronic map.
Background
The hand-drawn map is mainly applied to scenic spots, and the problem that the details of internal roads and internal buildings of the scenic spots are lacked only by main rivers and roads in the traditional electronic map is solved. The hand-drawn map vividly shows details of main buildings, roads and the like in a scenic spot in a cartoon mode, and is matched and superposed with the electronic base map, so that not only can immersive visiting experience be brought to tourists, but also positioning and navigation on the hand-drawn map can be realized.
The existing hand-drawn map has higher requirement on the hand-drawn map before being fused with an electronic map, the size of the drawing needs to be limited before hand-drawing, so that later drawing is facilitated, the drawing process is associated with the drawing process, on one hand, the requirement on a hand-drawn operator is higher, and on the other hand, the difficulty of the drawing process is increased.
In addition, the existing tour guide software usually loads the hand-drawn map of the scenic spot navigation area to be presented on the electronic map in the form of a single picture, so that the user is discontinuous in viewing the area except the single picture when using the tour guide software, and cannot simultaneously present multiple scenic spots, and if a mode of splicing multiple pictures is selected, the problem that the pictures at the spliced part are mutually overlapped or cannot be smoothly connected is caused. Moreover, for a super-large scenic spot such as a yulong snow mountain, the area is about 300 square kilometers, one-time loading of the hand-drawn map to the memory is not feasible, the memory limit is exceeded, how to accurately load the hand-drawn map and the electronic map, and solving the problem of the memory limit is also a technical bottleneck for realizing popularization and application of the hand-drawn map.
Disclosure of Invention
The invention aims to solve the problem that the prior art can not realize simultaneous presentation of multiple scenic spots by loading a hand-drawn map of a scenic spot navigation area to be presented on an electronic map usually in the form of a single picture.
A second object of the present invention is to solve the problem that simultaneous presentation of multiple scenes may result in overlapping of boundaries.
The invention provides a fusion method of a live-action hand-drawn map and an electronic map.
The invention realizes the purpose through the following technical scheme: the fusion method of the live-action hand-drawn map and the electronic map, the electronic map is divided into a plurality of first tile units with the same size, comprising the following steps:
s1, carrying out map matching operation on the live-action hand-drawn map and the electronic map;
s2, recording the longitude lng and latitude lat of the lower left corner of the live-action hand-drawn map;
s3, setting the loading level of the electronic map;
s4, starting loading, and adjusting the pixels of the live-action hand-drawn map according to the loading level;
s5, slicing the live-action hand-drawn map according to the current level zoom, and segmenting the live-action hand-drawn map into a plurality of second tile units with the same size;
calculating an X-axis pixel offset and a Y-axis pixel offset for each second tile element relative to the first tile element S6;
s7, translating the second tile unit according to the X-axis pixel offset and the Y-axis pixel offset to finish the map matching operation of the second tile unit and the first tile unit;
s8, determining the coordinates of the mercator of the second tile unit;
s9, the second tile unit is corresponded and loaded on the first tile unit under the same ink card tray coordinate on the electronic map;
s10, judging whether the loading is finished or not, if so, finishing the loading; otherwise, the loading level is updated and the process proceeds to S5.
This application, to draw with to the picture process phase separation, the hand draws the teacher and only is responsible for drawing, need not to consider to the picture problem, the later stage is drawn the map that the teacher painted and made according to the hand to the picture process and is gone on, has reduced the experience requirement and the drawing degree of difficulty of drawing the teacher to the hand.
According to the method and the device, before the live-action hand-drawn map is fused with the electronic map, the live-action hand-drawn map is firstly sliced, and the offset of each second tile unit and the first tile unit of the electronic map is calculated, so that the map is more accurate when a large map or a super-large map is processed.
Further, the step S1 includes: and extracting a plurality of vector parameters from the electronic map, and carrying out map matching operation on the live-action hand-drawn map and the electronic map according to the vector parameters by taking the vector parameters as the reference.
Further, step S5 specifically includes:
s51: generating a transparent background layer, and loading the live-action hand-drawn map on the transparent background layer to generate a new live-action hand-drawn map;
s52: and slicing the new live-action hand-drawn map into a plurality of second tile units with the same size.
According to the method and the device, an index library of the loaded second tile units and the loaded first tile units is established, a transparent background layer is arranged below each second tile unit, and the updated second tile units can simultaneously present image contents on the second tile units to be loaded and the loaded second tile units.
Further, the size of the transparent background layer is at least: ([ (W-1)/256+1) ] ([ (H-1)/256+1 ]), W is the width pixel of the real hand-drawn map, and H is the height pixel of the real hand-drawn map.
Further, aiming at the condition of loading a plurality of hand-drawn live-action maps, a first tile unit of the electronic map, a second tile unit fused with the live-action hand-drawn map and a second tile unit index library of the live-action hand-drawn map to be fused are established in advance;
before step S9, first determining whether a first tile unit corresponding to a second tile unit of the to-be-fused live-action hand-drawn map corresponds to a second tile unit of the fused live-action hand-drawn map;
if yes, overlapping the second tile unit of the real-scene hand-drawn map to be fused with the second tile unit of the fused real-scene hand-drawn map to generate an updated second tile unit, and entering step S10;
if not, go directly to step S10;
and after the loading is finished, updating the index base, and storing the updated second tile unit in the index base as a new second tile unit of the fused live-action hand-drawn map, or storing the newly loaded second tile unit in the index base, and establishing a corresponding relation with the first tile unit under the same mercator coordinate.
According to the method and the device, the contents presented by different scenic spot boundaries in the loading process can not be covered by retrieving and updating the second tile unit loaded by the same first tile unit, and the continuity of the loaded pictures is ensured.
Further, in step S6:
x-axis pixel shift:
(ii) a The long is the longitude of the lower left corner of the live-action hand-drawn map; zoom is the current level;
y-axis pixel offset:
(ii) a The lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
Further, the mercator coordinates of step S8:
mercator x coordinates:
；
mercator y coordinate:
；
the long is the longitude of the lower left corner of the live-action hand-drawn map; lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
Drawings
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is a schematic diagram of a fusion of two live-action hand-drawn maps with overlapping regions and an electronic map according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
the fusion method of the live-action hand-drawn map and the electronic map, the electronic map is divided into a plurality of first tile units with the same size, as shown in fig. 1, includes:
s1, carrying out map matching operation on the live-action hand-drawn map and the electronic map; extracting a plurality of vector parameters from an electronic map, wherein the vector parameters are used as the reference of the live-action hand-drawn map; carrying out map matching operation on the live-action hand-drawn map and the electronic map according to the vector parameters, and adjusting the position of the live-action hand-drawn map on the electronic map;
s2, recording the longitude lng and latitude lat of the lower left corner of the live-action hand-drawn map after the operation on the map is finished; the longitude and the latitude at any point, or the longitude and the pixel at any point, or the latitude and the pixel at any point can be determined after the real-scene hand-drawn map is aligned with the map;
s3, setting the loading level of the electronic map, such as 13-19 levels needing to be loaded, wherein the current loading level is 13 levels;
s4, starting loading, and adjusting the pixels of the live-action hand-drawn map according to the loading level;
s5-slice the live-action hand-drawn map for the current level zoom,
firstly, generating a transparent background layer, and loading a live-action hand-drawn map on the transparent background layer to generate a new live-action hand-drawn map; the size of the transparent background layer is at least: ([ (W-1)/256+1) ] ([ (H-1)/256+1 ]), W is the width pixel of the real-scene hand-drawn map, and H is the height pixel of the real-scene hand-drawn map;
and then, slicing the new live-action hand-drawn map into a plurality of second tile units with the same size.
Calculating an X-axis pixel offset and a Y-axis pixel offset for each second tile element relative to the first tile element S6;
x-axis pixel shift:
(ii) a lng is longitude of the lower left corner of the live-action hand-drawn map; zoom is the current level;
y-axis pixel offset:
(ii) a lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
S7, translating the second tile unit according to the X-axis pixel offset and the Y-axis pixel offset to finish the map matching operation of the second tile unit and the first tile unit; and translating the second tile unit according to the X-axis pixel offset and the Y-axis pixel offset, so that the relative positions of the second tile unit and the first tile unit are more accurate, and the map reduction degree after mutual fusion is higher.
S8, determining the coordinates of the mercator of the second tile unit;
mercator x coordinates:
；
mercator y coordinate:
(ii) a Wherein, lng is the longitude of the lower left corner of the live-action hand-drawn map; lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
S9, the second tile unit is corresponded and loaded on the first tile unit under the same ink card tray coordinate on the electronic map;
s10, judging whether the loading is finished or not, if so, finishing the loading; otherwise, the loading level is updated and the process proceeds to S5. The update of the load level may be done in an incremental or decremental manner.
Aiming at the condition of loading a plurality of hand-drawn live-action maps, a first tile unit of the electronic map, a second tile unit of the fused live-action hand-drawn map and a second tile unit index library of the to-be-fused live-action hand-drawn map are established in advance, as shown in table 1.
Storing second tile units of the fused live-action hand-drawn map in the index library, wherein the second tile units correspond to the corresponding first tile units; for the situation of loading multiple hand-drawn real-scene maps, if a second tile unit corresponding to the first hand-drawn real-scene map has been loaded at a certain first tile unit, overlapping a second tile unit to be loaded on a second hand-drawn real-scene map corresponding to the same first tile unit with the second tile unit loaded on the first hand-drawn real-scene map to generate an updated second tile unit of the second hand-drawn real-scene map, and entering step S9; if the second tile unit corresponding to any one hand-drawn live-action map has not been loaded at a certain first tile unit, the process goes directly to step S9.
Specifically, as shown in fig. 2, the first tile units S3-S6 of the electronic map S correspond to a104-a108 of the fused live-action hand-drawn map a, and the B220-B223 of the to-be-fused live-action hand-drawn map B exactly coincides with the a104-a108 of the fused live-action hand-drawn map a, and corresponds to the first tile units S3-S6. Before the live-action hand-drawn map B is fused, B220-B223 are respectively superposed with a104-a108 to generate the updated second tile unit c220-c223 of the live-action hand-drawn map B to be fused, as shown in table 2, and then the second tile unit of the live-action hand-drawn map B to be fused is loaded, after the fusion of the overlapping part is completed or the loading of the whole live-action hand-drawn map B to be fused is completed, the second tile unit of the fused live-action hand-drawn map corresponding to the first tile units S1-S9 is updated to a102, a103, c220, c221, c222, c223, B224, B225, B226, as shown in table 3.
TABLE 1
| S: first tile unit | Second tile unit fused with live-action hand-drawn map | Second tile unit of hand-drawn map with real scene to be fused |
| S1 | a102 | |
| S2 | a103 | |
| S3 | a104 | b220 |
| S4 | a106 | b221 |
| S5 | a107 | b222 |
| S6 | a108 | b223 |
| S7 | b224 | |
| S8 | b225 | |
| S9 | b226 |
TABLE 2
| S: first tile unit | Second tile unit fused with live-action hand-drawn map | Second tile unit of hand-drawn map with real scene to be fused |
| S1 | a102 | |
| S2 | a103 | |
| S3 | a104 | c220 |
| S4 | a106 | c221 |
| S5 | a107 | c222 |
| S6 | a108 | c223 |
| S7 | b224 | |
| S8 | b225 | |
| S9 | b226 |
TABLE 3
| S: first tile unit | Second tile unit fused with live-action hand-drawn map |
| S1 | a102 |
| S2 | a103 |
| S3 | c220 |
| S4 | c221 |
| S5 | c222 |
| S6 | c223 |
| S7 | b224 |
| S8 | b225 |
| S9 | b226 |
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. The fusion method of the live-action hand-drawn map and the electronic map, the electronic map is divided into a plurality of first tile units with the same size, and the method is characterized by comprising the following steps:
s1, carrying out map matching operation on the live-action hand-drawn map and the electronic map;
s2, recording the longitude lng and latitude lat of the lower left corner of the live-action hand-drawn map;
s3, setting the loading level of the electronic map;
s4, starting loading, and adjusting the pixels of the live-action hand-drawn map according to the loading level;
s5, slicing the live-action hand-drawn map according to the current level zoom, and segmenting the live-action hand-drawn map into a plurality of second tile units with the same size;
calculating an X-axis pixel offset and a Y-axis pixel offset for each second tile element relative to the first tile element S6;
s7, translating the second tile unit according to the X-axis pixel offset and the Y-axis pixel offset to finish the map matching operation of the second tile unit and the first tile unit;
s8, determining the coordinates of the mercator of the second tile unit;
s9, the second tile unit is corresponded and loaded on the first tile unit under the same ink card tray coordinate on the electronic map;
s10, judging whether the loading is finished or not, if so, finishing the loading; otherwise, the loading level is updated and the process proceeds to S5.
2. The fusion method of the live-action hand-drawn map and the electronic map according to claim 1, wherein the step S1 comprises:
a number of vector parameters are extracted from the electronic map,
the live-action hand-drawn map takes the vector parameter as a reference,
and carrying out map matching operation on the live-action hand-drawn map and the electronic map according to the vector parameters.
3. The fusion method of the live-action hand-drawn map and the electronic map as claimed in claim 1, wherein the step S5 specifically comprises:
s51: generating a transparent background layer, and loading the live-action hand-drawn map on the transparent background layer to generate a new live-action hand-drawn map;
s52: and slicing the new live-action hand-drawn map into a plurality of second tile units with the same size.
4. The method for fusing the live-action hand-drawn map and the electronic map as claimed in claim 3, wherein the size of the transparent background layer is at least: ([ (W-1)/256+1) ] ([ (H-1)/256+1 ]), W is the width pixel of the real hand-drawn map, and H is the height pixel of the real hand-drawn map.
5. The method for fusing the live-action hand-drawn map and the electronic map according to claim 1, 2 or 3, wherein for the case of loading a plurality of hand-drawn live-action maps, an index library of a first tile unit of the electronic map, a second tile unit of the fused live-action hand-drawn map and a second tile unit of the to-be-fused live-action hand-drawn map is established in advance;
before step S9, first determining whether a first tile unit corresponding to a second tile unit of the to-be-fused live-action hand-drawn map corresponds to a second tile unit of the fused live-action hand-drawn map;
if yes, overlapping the second tile unit of the real-scene hand-drawn map to be fused with the second tile unit of the fused real-scene hand-drawn map to generate an updated second tile unit, and entering step S10;
if not, go directly to step S10;
and after the loading is finished, updating the index base, and storing the updated second tile unit in the index base as a new second tile unit of the fused live-action hand-drawn map, or storing the newly loaded second tile unit in the index base, and establishing a corresponding relation with the first tile unit under the same mercator coordinate.
6. The method for fusing a live-action hand-drawn map and an electronic map according to claim 1, wherein the step S6 is:
x-axis pixel shift:
(ii) a The long is the longitude of the lower left corner of the live-action hand-drawn map; zoom is the current level;
y-axis pixel offset:
(ii) a The lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
7. The fusion method of the live-action hand-drawn map and the electronic map as claimed in claim 1, wherein the mercator coordinates of step S8:
mercator x coordinates:
；
mercator y coordinate:
(ii) a The long is the longitude of the lower left corner of the live-action hand-drawn map; lat is the latitude of the lower left corner of the live-action hand-drawn map; zoom is the current level.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908146A (en) * | 2020-12-26 | 2021-06-04 | 云景文旅科技有限公司 | Hand-drawn map cutting and presenting method and intelligent tour guide and visiting guide system |
| CN112991808A (en) * | 2020-12-29 | 2021-06-18 | 杭州海康威视数字技术股份有限公司 | Parking space display method and device for parking area and electronic equipment |
| CN113434526A (en) * | 2021-06-25 | 2021-09-24 | 重庆紫光华山智安科技有限公司 | Road network data updating method and device, electronic equipment and storage medium |
| CN117591612A (en) * | 2024-01-19 | 2024-02-23 | 贵州北斗空间信息技术有限公司 | Method, device and system for loading terrain tile data on three-dimensional platform in real time |
-
2019
- 2019-04-16 CN CN201910303083.4A patent/CN111833279A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908146A (en) * | 2020-12-26 | 2021-06-04 | 云景文旅科技有限公司 | Hand-drawn map cutting and presenting method and intelligent tour guide and visiting guide system |
| CN112991808A (en) * | 2020-12-29 | 2021-06-18 | 杭州海康威视数字技术股份有限公司 | Parking space display method and device for parking area and electronic equipment |
| CN113434526A (en) * | 2021-06-25 | 2021-09-24 | 重庆紫光华山智安科技有限公司 | Road network data updating method and device, electronic equipment and storage medium |
| CN117591612A (en) * | 2024-01-19 | 2024-02-23 | 贵州北斗空间信息技术有限公司 | Method, device and system for loading terrain tile data on three-dimensional platform in real time |
| CN117591612B (en) * | 2024-01-19 | 2024-04-09 | 贵州北斗空间信息技术有限公司 | Method, device and system for loading terrain tile data on three-dimensional platform in real time |
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