TWI503800B - Building information model display system and method thereof - Google Patents

Description

Building model image display system and method thereof

The present invention relates to a building model display system and method thereof; in particular, the present invention relates to a building for calculating a relative position in a corresponding position in a three-dimensional building model for a position in a flat building image. Model display system and its method.

With the rapid development of the building information model (Building Information Modeling, BIM) concept, whether it is a new building or an old building, the building information model concept and building information model have been introduced, and then the building information model is used to manage the building. Applications such as floor plan output, design analysis, construction management, operation and maintenance, etc. In the stages of the life cycle of the building, the relevant technical personnel and management personnel rely heavily on the various floor plans, such as design drawings, construction drawings, equipment location maps, space layout maps and other related plans, showing that the floor plan is on the control building. There is a great demand.

In the current building information model technology, the building information model management unit can be provided to generate relevant floor plans in the model. However, for the user who views the floor plan, if the plan says that it still cannot meet its needs, it cannot quickly view the relevant building information model location on the floor plan, and still needs to obtain engineering information requirements with the building information model management unit, in the close information request. In the process, the willingness of the relevant units to use the building information model is not high, and the building information model data and stereoscopic visualization characteristics cannot be fully utilized.

An object of the present invention is to provide a building model display system and method, which can instantly transmit a planar architectural image of a three-dimensional building model to a client device, thereby reducing the transmission capacity required by the system, and improving the operation speed and convenience.

The invention provides a building model display method for a building model display system, the system comprising at least a client device and a server device, the method comprising the steps of: (a) displaying a plane image of the building with the client device, Wherein the planar architectural image is generated by the three-dimensional building model; (b) the client device generates a user finger having a direction indication according to the planar building image; (c) determining, by the server device, the corresponding command according to the user instruction And observing a position in the three-dimensional building model of the planar building image; and (d) displaying, by the client device, a relative point position in the planar architectural image according to the viewing position.

The present invention provides a building model display system, comprising: a server device, storing at least one three-dimensional building model and a planar building image corresponding to the three-dimensional building model; and a client device coupled to the server device, The client device displays the planar architectural image, and generates a user instruction having a direction indication according to the planar architectural image; wherein the server device determines, according to the user instruction, the three-dimensional architectural model corresponding to the planar architectural image A viewing position is such that the client device can display a corresponding point location in the planar architectural image based on the viewing position.

P‧‧‧Location

D‧‧‧ Direction

51‧‧‧ screen

100‧‧‧Building model display system

105‧‧‧Network

110‧‧‧Client device

111‧‧‧planar imagery

120‧‧‧Servo device

1 is a schematic view of a building model display system of the present invention; FIG. 2 is a perspective view of an embodiment of a three-dimensional building model of the present invention; FIG. 3A is a top view of the planar building image of the three-dimensional building model of FIG. 2; Figure 4A is a schematic diagram of the interaction between the client device and the server device; Figure 4B is a schematic view of another embodiment of Figure 4A; Figure 5A is a perspective view of the user interface Figure 5B is a schematic view of another embodiment of the user interface of Figure 5A; Figure 6A is a flow chart of the method of the present invention; Figure 6B is a flow chart of another embodiment of Figure 6A; Figure 7 is an updated perspective view A flowchart of an embodiment; FIG. 8 is a flow diagram of an embodiment with both a perspective view and a planar architectural image; and FIGS. 9A and 9B are flow diagrams of another embodiment of the method of the present invention.

The invention provides a building model display system and method thereof. In a preferred embodiment, the building model display system is for a construction site.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of an embodiment of a building model display system 100 of the present invention. As shown in FIG. 1, the building model display system 100 includes at least one client device 110 and a server device 120. The client device 110 can be an electronic product such as a smart phone, a tablet computer, a notebook computer, and/or a desktop computer. The server device 120 is preferably one or more servers. In this embodiment, the client device 110 is preferably located at a first location, such as a construction site, and the server device 120 is preferably located at a second location, such as a data center. The server device 120 can be coupled to one or more client devices 110 by a network 105. In the present embodiment, the network 105 is an internet network; however, it is not limited thereto. In other different embodiments, the network 105 can also be a communication technology for a local area network (LAN), a telecommunications network (such as a network on a mobile phone), a wireless network, and the like. For example, as shown in Figure 1, The client device 110 can be a tablet computer coupled to the server device 120 using a wireless network. By connecting with the server device 120, the client device 110 can request the relevant information of various building models (BIMs) from the server device 120. The building model display system 100 of the present invention mainly stores the building model data in a storage module of the server device 120. In this embodiment, the storage module can be a hard disk or any other medium capable of storing data. In this embodiment, there is an actual distance between the first position and the second position. In other words, the client device 110 in the first location and the server device 120 in the second location may be located in different time regions and/or countries. In this case, when a related material of a building is needed, the client device 110 can request and obtain related materials corresponding to the building model of the building from the server device 120 through the network 105.

Figure 2 shows a three-dimensional architectural model of one of the buildings corresponding to the first location of Figure 1. It should be noted that the description of the drawings is merely for convenience of explanation. In other words, the three-dimensional building model is not limited to the shape and size of Figure 2; in other different embodiments, the building model can be a plurality of floors. In the present embodiment, as shown in FIGS. 1 and 2, the server device 120 can store architectural models of various buildings. Specifically, the building model is a three-dimensional virtualized model of the whole or part of the actual building, and each dimension preferably has the same ratio as the actual building. In other words, the size of the actual building can be calculated/converted according to the corresponding building model.

FIG. 3A is an exemplary diagram of a user interface of one of the client devices 110. In this embodiment, the client device 110 is preferably a tablet or a handheld computer, such as a notebook computer or a smart phone. In this case, the user interface of the client device 110 is both an input interface and a display interface. However, in other different embodiments, the client device 110 can also be other electronic products, such as a desktop computer or workstation, that can receive instructions and display operational results. In this embodiment, as shown in FIG. 3A, initially the client device 110 does not display any building related images. The user must first log in to the server device 120 by the client device 110 to begin using the functions of the building model display system 100 of the present invention. After the login is successful, in an embodiment, the client device browses the data of all the building models stored on the server device 120. Specifically, by way of example, the server device 120 can list all stored building models as a table for display to the client device 110. In this way, the user can select any relevant building model related material. After selecting the building model from the list, the server device 120 will root A planar architectural image 111 is generated based on the building model selected by the user and will be transmitted to the client device 110. When the client device 210 receives the planar building image 111, it will be displayed on the user interface as shown in FIG. 3A. In the present embodiment, the planar architectural image 111 is an upper view of the three-dimensional architectural model of FIG.

Then, as shown in FIG. 3B, the user can indicate a certain point position P and a direction D on the displayed planar building image 111 by using the user interface of the client device 110. Specifically, the fixed point position P is an indication that represents a user's position in the planar building image 111. In this embodiment, if the client device 110 is a tablet computer or a smart phone, the user can touch/pick a certain point position P on the plane image 111 by using the touch function, and by dragging ( The action of dragging can indicate a direction D. It should be noted that the client device 110 is not limited to the user's instruction by using the touch method. In other different embodiments, the client device 110 can receive the user's indication by other means, such as Mouse and / or keyboard, voice recognition and other technologies.

4A is a schematic diagram of an embodiment of communication interaction between the client device 110 and the server device 120. In this embodiment, the client device 110 generates a positioning indication and a direction indication according to the fixed point position P and the direction D, respectively. The client device 110 may further encode the positioning indication and the direction indication into a user indication and transmit to the server device 120. However, in other different embodiments, the client device 110 may not directly encode the positioning indication and the direction indication as a user indication, but directly transmit the positioning indication and the direction indication to the server device 120. In this embodiment, after receiving the user's instruction, the server device 120 first decodes the positioning indication and the direction indication, and determines an observation position corresponding to the stereoscopic building model according to the positioning indication. Specifically, the server device 120 learns the relative position of the fixed point position P in the plane building image 111 according to the positioning instruction, and can calculate and calculate by comparing the plane building image transmitted to the client device 110 with the corresponding three-dimensional building model. An observation position corresponding to the fixed point position P in the building model. Specifically, the server device 120 calculates the relative stereo position based on the two-dimensional fixed point position P. To this end, the server device 120 generates the observation position according to a preset height and the positioning indication operation. In this way, the server device 120 can determine the corresponding observation position (stereo position) from the fixed point position P of the planar building image of the client device 110. For example, if the preset height is 180 cm, the observation position will reflect the preset height in the building model. And the fixed point position. However, in other different embodiments, the preset height may also be another number or may be modified/updated by the client device 110.

However, in another embodiment, the client device 110 may also first download the stereoscopic building model from the server device 120. As shown in FIG. 4B, in this case, the client device 110 can receive a planar architectural image corresponding to the three-dimensional building model from the server device 120. Then, the client device 110 can transmit the user indication to the server device 120 according to the instruction input by the user. The server device 120 determines/calculates the observation position in the three-dimensional building model according to the three-dimensional building model and the user instruction, and transmits the observation position information to the client device 110. Upon receiving this information, the client device 110 will update the fixed point location in the planar architectural image based on this information.

In the embodiment of FIG. 4A, the server device 120 will generate and transmit a perspective view to the client device 110 based on the viewing position, the direction indication, a predetermined viewing angle, and the stereoscopic building model. Upon receipt of the client device 110, a perspective view will be displayed on the user interface as shown in Figure 5A. In the present embodiment, the preset viewing angle refers to the angle D (direction indication) specified by the user in the observation position in the three-dimensional building model, and the user can visually recognize the angle of the visual range in the architectural model. For example, if the preset viewing angle ranges from 70 degrees, as shown in FIG. 3B, the perspective view produced by the servo end device 120 will be a normally observable visual range in the building at a fixed point position, as shown in the figure. 5A is shown. As shown in FIGS. 3B and 5A, when the user draws the direction D from the fixed point position P on the user interface of the client device 110, the client device 110 simultaneously displays the dotted line indication of the viewing angle range according to the direction D. In the present embodiment, this dashed line indicates that the range of the envelops can be rendered by color shading, such as yellow or any other suitable color. Although the preset viewing angle range is set to 70 degrees in this embodiment, in other different embodiments, the preset viewing angle range may be other degrees, or the user may draw the direction D by The dragging action of the two fingers instantly expands or reduces the range of the viewing angle, so that the display range of the perspective view generated by the servo end device 120 can be relatively enlarged or reduced. In addition, in this embodiment, the user can update the information such as the fixed point position P, the direction D, and/or the observation angle range by the user interface or the input interface of the client device 110. Further, in the present embodiment, in the perspective view, the user can update the vertical angle of the vision. For example, the user can drag the two fingers onto the perspective view to cause the server device 120 to A perspective view having a corresponding upper or lower angle is computed to the client device 110. However, in other different embodiments, the server device 120 can initially transmit a larger size/resolution perspective to the client device 110. In this case, the perspective view in FIG. 5A may be a partial display of the higher size/resolution, and when the user indicates at the client device 110 that he wants to change the up/down angle of the perspective, the client device 110 Simply move the display to the upper or lower position in the high size/resolution map. Thereby, communication between the client device 110 and the server device 120 can be reduced, and the response time of the client device 110 to the command under the user can be shortened.

FIG. 5B is a schematic diagram of another embodiment of the user interface of the client device 110 of FIGS. 3A and 5A. As shown in FIG. 5B, the client device 110 can simultaneously display the planar building image and the perspective view transmitted from the server device 120. Specifically, as shown in FIG. 5B, the planar architectural image and the perspective view may be simultaneously stacked or displayed side by side on the user interface of the client device 110. Therefore, since the fixed point position P, the direction D, and/or the viewing angle range can be updated at any time according to the user's preference, in updating the data, the user can freely view the planar architectural image and the perspective view at the same time. Visit the virtualized building model of the first location building. In addition, since the three-dimensional building model of the building is stored only in the server device 120, all the operations of converting the planar image into the stereo image are all borne by the server device 120. Therefore, the client device 110 only needs to output an indication and receive the planar architectural image and perspective view of the server device 120, thereby providing a method for the user to refer to the three-dimensional building model of the building simply, quickly and conveniently.

6A is a schematic flow chart of a method for displaying a building model according to the present invention. The building model display method of the present invention is preferably used in a building model display system, as described above for a building model display system. The system includes the client device 110 and a server device 120 that stores a three-dimensional building model. The method includes the following steps:

Step S100 includes receiving, by the client device 110, a planar architectural image from the server device 120, wherein the planar architectural image is generated by a three-dimensional architectural model. Specifically, the client device 110 first requests the stereoscopic building model related material from the server device 120. First, since the building model of the plurality of different buildings may be stored in the server device 120, the client device 110 first displays the various building models stored by the server device 120 in a table on the user interface. Thereby, the user in front of the client device 110 can select the relevant information of the building model to be viewed. For this selection, the server device 120 will generate according to the selected building model. Corresponding planar building images are transmitted to the client device 110.

Step S200 includes generating, by the client device 110, a user command having a direction indication to the server device 120 according to the planar building image. In detail, in an embodiment, the client device 110 can generate a positioning indication and a direction indication according to the fixed point position P and the direction D in the plane building image. Then, the client device 110 can generate a user command to the server device 120 according to the positioning indication and/or the direction indication. However, in other different embodiments, the client device 110 may transmit the positioning indication and/or direction indication directly to the server device 120 without generating a user command.

Step S300 includes determining, by the server device 120, one of the observed positions in the three-dimensional building model corresponding to the planar building image according to the user instruction. In this embodiment, after receiving the user command, the server device 120 will read the positioning indication and the direction indication in the user command. The servo end device calculates a corresponding stereo position (observation position) in the three-dimensional building model according to the positioning instruction and the preset height. Specifically, this stereoscopic position represents the position of the user virtually stationed in the three-dimensional building model corresponding to the fixed point position P, and the observation position of the architectural model can be observed.

Step S400 includes generating a perspective view by the server device 120 according to the stereoscopic building model, the viewing position, and the direction indication. Specifically, in the present embodiment, the servo end device 120 calculates and generates a relative perspective view from the three-dimensional building model according to the observation position (stereoscopic position) and the direction indication. Briefly speaking, the server device 120 calculates the position in the three-dimensional building model at the position of the observation position, and indicates the direction specified by the direction, and generates a perspective according to the preset observation angle range. In other words, this perspective represents that the user is in the actual building, at the fixed point position P, in the direction of the direction of the direction D and the visual range of the preset viewing angle range, and the virtualized visual scene in the building is visible. .

Step S500 includes receiving and displaying a perspective view at client device 110. In this step, the client device 110 will receive a perspective view generated by the server device 120 and display it on the user interface as shown in Figures 5A and/or 5B. In this way, since the building model is stored in the server device 120, and all operations for the building model are processed by the server device 120, the client device 110 can quickly browse through the virtualized buildings.

Figure 6B is a flow chart of another embodiment of Figure 6A. As shown in Figures 6A and 6B, Step S200 may include step S220. Step S220 includes generating, by the client device 110, a user instruction according to a positioning indication and a direction indication. Specifically, the location indication and the direction indication are generated based on user input information received by the client device 110 on its user interface (input interface). The positioning indication points the selected point position P on the plane building image according to the user's interface on the user interface by touch or other means. The direction indication is generated according to the direction D in which the user selects the point position P and draws a dragging direction. The client device 110 records the relative position of the fixed point position P and the direction D with the image of the planar building to generate a user indication.

As shown in FIG. 6B, step S300 may further include: reading, by the server device 120, the positioning indication and the direction indication from the user instruction, and determining, according to the positioning indication and the direction indication, the three-dimensional building model corresponding to the plane building image. Observe the position (stereo position). Specifically, the server device 120 determines and generates the observation position according to the preset height and the positioning indication. In this way, the server device can determine the corresponding stereo position from the fixed position of the planar building image of the client device 110. In this way, the server device 120 can convert the position of the plane into a stereo position.

As shown in FIG. 7, after the step S500, the following steps may be further included:

Step 600 includes receiving, by the server device 120, an update location indication from the client device 110. Step 610 includes determining, by the server device 120, the stereo location corresponding to the stereoscopic building model according to the update indication, and generating the stereoscopic architectural model in the stereoscopic The perspective view of the location; and step 620 includes displaying the perspective view with the client device 110.

8 is a flow chart in which the user can input the instruction again when the client device 110 simultaneously displays the perspective view and the planar building image, and the fixed position P is set. As shown in FIG. 8, steps 700 through 740 may be further included.

Step 700 includes simultaneously displaying the perspective view and the planar architectural image with the client device 110. In particular, the flat building image and perspective view can be displayed side by side on the user interface of the client device 110. Thereby, since the fixed point position P, the direction D and/or the viewing angle range can be changed at any time according to the user's preference, and the figures are changed, the plane building image and the perspective view can be freely moved to visit the first position building. Virtualized building model. In addition, since the three-dimensional building model of the building is stored only in the server device 120, all the planar to stereoscopic image conversions are all borne by the server device 120. Therefore, the client device 110 only needs to output an indication. By receiving the planar architectural image and perspective view of the servo end, the user can provide a quick and easy way to visit/reference the three-dimensional architectural model of the building.

Next, as shown in FIG. 8, step 710 includes receiving, by the client device 110, an operation instruction from a user interface, and calculating an update positioning indication and an update direction indication according to the operation instruction, thereby generating an update user command transmission to Servo device 120. Specifically, when the client device 110 simultaneously displays the perspective view and the planar building image, and the fixed point position P is set, the user can input an instruction on the user interface or the input interface of the client device 110, as described above. Click / touch or drag. The client device 110 calculates an update positioning indication and/or an update direction indication according to the action/operation instruction, and generates an update user command to transmit to the server device 120. For example, in an embodiment, if the user touches a location on the displayed planar architectural image, the client device 110 will generate an updated positioning indication according to the location. This update location indicator indicates a new fixed point location P that is clicked on by the user. The user can then enter an indication of the direction, such as on a flat architectural image, drawing a direction with a drag action. The client device 110 will instruct the operation update direction indication according to the operation indication, and generate an update user command to the server device 120 according to the update location indication and the update direction indication. However, in other different embodiments, the user may not need to input an operation instruction on the image of the flat building; the user may also input the above operation instruction on the perspective view.

As shown in FIG. 8, step 720 includes determining, by the server device 120, one of the three-dimensional building models corresponding to the planar building image to update the viewing position based on the updated user command. Specifically, the server device 120 reads the update location indication and/or the update direction indication from the update user command, and calculates a new observation location (updated observation location) corresponding to the stereoscopic building model according to the update location indication. . Step 730 includes generating, by the server device 120, an updated perspective based on the stereoscopic building model, the updated viewing position, and the updated direction indication. Next, step 740 includes receiving and updating the updated perspective view with the client device 110. By way of this, in the case that the client device 110 simultaneously displays the perspective view and the plane building image, the building model display system 100 can quickly update the perspective view and/or the plane building of the client device 110 according to the user's operation. image.

However, in another embodiment, if the client device 110 downloads the stereoscopic building model from the server device 120 in advance, the perspective view may also be based on the received building model. The client device 110 is generated. Specifically, as shown in FIG. 9A, if the client device 110 has a stored three-dimensional building model, the building model display system 100 of the present invention can perform the following steps F100 to F400:

Step F100 includes displaying a planar architectural image with the client device 100, wherein the planar architectural image is generated by a three-dimensional architectural model. In detail, the client device 100 first downloads the stereoscopic building model from the server device 120. In the present embodiment, the planar building image is an image generated by the server device 120 according to the three-dimensional building model, and is transmitted to the client device 110 simultaneously with the three-dimensional building model. However, in other different embodiments, the planar architectural image may also be generated by the client device 110 based on the downloaded architectural model after the client device 110 downloads the three-dimensional architectural model.

Step F200 includes generating, by the client device 110, one of the user instructions having a direction indication based on the planar architectural image. Specifically, the client device 110 calculates the direction indication based on the operational actions/indications entered by the user on the planar building image displayed by the user interface. For example, if the user draws a line on the user interface, the client device 110 can calculate a direction according to the touch start point and the end point, and generate a direction indication according to the direction. The client device 110 then encodes the direction indication as a user command.

Step F300 includes determining, by the server device 120, one of the observed positions in the three-dimensional building model corresponding to the planar building image according to the user instruction. In this embodiment, although the client device has downloaded the three-dimensional building model and displays the relative planar building image, when the user wants to change the position, in the traditional building model display system, it is impossible to simultaneously display the perspective view and The correct location of the graphic image of the building. In other words, there is a deviation between the position displayed between the perspective view and the planar building image. Since the hardware device of the client device 110 may not be able to cope with the operation of updating the location in real time, in the present embodiment, this operation is performed by the server device 120. Specifically, the client device 110 will transmit a user command with a direction indication to the server device 120. The server device 120 determines/calculates the observation position in the three-dimensional building model according to the user command and the three-dimensional building model corresponding to the plane building image displayed by the client device 110. This observation position is the update position of the corresponding user in the three-dimensional building model.

Step F400 includes displaying, by the client device 110, relative fixed position positions in the leather building image based on the observed position. Specifically, after the server device calculates a new observation position, the observation position information is transmitted to the client device 110. Client device 110 is based on This viewing position information updates the fixed point position in the flat architectural image it displays. Therefore, whenever the user wants to update the location, the fixed position of the client device 110 can be updated by the server device computing a new viewing position. In this way, when the user browses the building model (through the perspective view and the flat building image), the client device 110 can display the correct fixed point position, which can improve the convenience of the user using the building model display system 100.

Figure 9B is another embodiment of Figure 9A. As shown in FIG. 9B, step F500 may be further included. Step F500 includes generating, by the client device 110, a perspective view of the corresponding viewing position based on the user command and the received three-dimensional building model. Specifically, in the embodiment, after the server device 120 generates a new observation position and transmits the information thereof to the client device 110, the client device 110 can receive the received stereo according to the instruction input by the user. The building model and the observation position information generate and display a relative perspective. In this way, when the user inputs an indication of the replacement position, the client device 110 can be immediacy and simultaneously display the correct fixed point position and perspective to the user.

The present invention has been described by the above-described related embodiments, but the above embodiments are only intended to implement the scope of the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalent arrangements of the spirit and scope of the invention are included in the scope of the invention.

51‧‧‧ screen

100‧‧‧Building model display system

105‧‧‧Network

110‧‧‧Client device

120‧‧‧Servo device

Claims (18)

A building model image display method for a building model image display system, the system comprising at least a client device and a server device having a stereoscopic building model, the method comprising the steps of: (a) using the client device Displaying a planar architectural image, wherein the planar architectural image is generated by the three-dimensional architectural model; (b) generating, by the client device, a user instruction having a direction indication according to the planar architectural image; (c) using the servo terminal The device determines, according to the user instruction, an observation position in a three-dimensional architectural model corresponding to the planar architectural image; and (d) displaying, by the client device, a relative fixed position in the planar architectural image according to the observed position. The building model image display method according to claim 1, further comprising the step of: receiving, by the client device, the three-dimensional building model from the server device before the step (a). The building model image display method according to claim 2, further comprising the following steps after the step (d): generating, by the client device, according to the user instruction and the received stereoscopic building model, and displaying the corresponding observation position A perspective view. The building model image display method according to claim 1, further comprising the step of: generating, by the client device, a perspective view according to the three-dimensional building model, the fixed point position, and the direction indication. The building model image display method of claim 1, wherein the step (b) comprises at least the step of: generating, by the client device, the user instruction according to a positioning indication and the direction indication. The method for displaying a building model image according to claim 5, further comprising the steps of: sensing, by the client device, a touch action and a drag action from a user interface, wherein the positioning indication and the direction indication are respectively according to the touch action And the drag action is generated. The method for displaying a building model image according to claim 5, wherein the step (c) further comprises the step of: reading, by the server device, the positioning indication and the direction indication from the user instruction, and according to the positioning instruction and The direction indication determines the observed position in the three-dimensional building model corresponding to the planar building image. The method for displaying a building model image according to claim 1, after the step (d), further comprising the steps of: receiving, by the server device, an update positioning indication from the client device; and positioning the server device according to the update Instructing to determine the viewing position corresponding to the three-dimensional building model, and generating the perspective view of the stereoscopic building model corresponding to the observed position; and displaying the perspective view with the client device. The building model image display method of claim 3 or 4, further comprising the step of simultaneously displaying the perspective view and the planar architectural image with the client device. The method for displaying a building model image according to claim 9, further comprising the steps of: receiving an operation instruction from the user interface by the client device, and calculating an update positioning indication and an update direction indication according to the operation instruction, and Generating an update user command to the server device; and the server device determines, according to the update user command, one of the three-dimensional building models corresponding to the planar building image to update the viewing position; and the server device according to the three-dimensional The building model, the updated viewing location, and the updated direction indication generate an updated perspective view; and the updated perspective is displayed and updated by the client device. The building model image display method as claimed in claim 9, further comprising the step of: displaying the positioning indication and the direction indication in the plane building image. An architectural model image display system comprising: a server device for storing at least one three-dimensional building model and a planar architectural image corresponding to the three-dimensional building model; and a client device coupled to the server device, the client The device displays the planar building image, and generates a user instruction having a direction indication according to the planar building image; wherein the server device determines, according to the user instruction, the corresponding image of the planar building image One of the body building models observes the position such that the client device can display a corresponding point location in the planar building image based on the viewing position. The architectural model image display system of claim 12, wherein the server device generates a perspective view to the client device based on the viewing position and the direction indication to cause the client device to display the perspective view. The architectural model image display system of claim 13, wherein the user command further comprises a positioning indication generated relative to a certain point position on the planar architectural image. The building model image display system of claim 14, wherein the client device calculates the positioning indication and the direction indication according to an operation instruction, the operation instruction comprising a touch action and a drag action. The architectural model image display system of claim 13, wherein the client device updates the user indication to cause the server device to generate a new perspective based on the new user indication. The architectural model image display system of claim 13, wherein the client device simultaneously displays the planar architectural image and the perspective view. The architectural model image display system of claim 13, wherein the client device comprises a notebook computer, a smart phone, a desktop computer, and a tablet computer.