Map Data Scaling for Print Area Adaptation
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Solution Overview
Problem
Existing map printing technologies fail to ensure appropriate scale and detail in printed maps due to the lack of consideration for the difference in scale between displayed and printed maps, leading to inadequate information density and image quality.
Innovation Solution
An information processing device that acquires first map data from a server, determines a second zoom level based on the first zoom level, and retrieves second map data to ensure the printed map image is appropriately scaled and detailed for the printing size, using vector data and bitmap-format images to maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If map data with a fixed zoom level is acquired from the server without considering print size, then the map can be displayed and printed, but the scale of the printed map becomes inappropriate to the printing result size
Solution Approach 1:
The system dynamically determines the second zoom level based on the first zoom level and print area settings, rather than using a fixed zoom level. This allows the map scale to adapt automatically to different printing scenarios, resolving the contradiction between adaptability and precision.
Solution Approach 2:
The system changes the zoom level parameter from the first zoom level to the second zoom level based on the print area and desired information density. By adjusting this key parameter, the map scale becomes appropriate for the printing result size while maintaining precision.
2Measurement precision
If high resolution map data is acquired for printing, then the map detail improves, but the information amount with respect to printing result size becomes inappropriate
Solution Approach 1:
The system optimizes the zoom level parameter to achieve the right balance between map detail and information density. By calculating the second zoom level based on the first zoom level and print area, it ensures appropriate information amount without excessive detail that would waste space.
3Device complexity
If the same map data is used for both display and printing, then the process is simple, but the map scale is not appropriate to the size of the printing result
Solution Approach 1:
The system implements a dynamic zoom level determination process that adjusts the second zoom level based on the first zoom level and print area. This adds minimal complexity while significantly improving print scale precision.
Solution Approach 2:
The system performs preliminary calculation of the second zoom level before acquiring the second map data. This preliminary action ensures the correct scale is used from the start, avoiding the need for post-processing adjustments and maintaining efficiency.
Data Source
AI summary
An information processing device includes a display; a communication interface; and a controller. The controller is configured to perform: acquiring first map data from a server through the communication interface, the first map data being indicative of a first map image, a first zoom level indicating a first scale of the first map image; displaying the first map image based on the first map data on the display; setting a print area to the first map image; determining a second zoom level on the basis of the first zoom level, the second zoom level indicating a second scale of a second map image, the second map image including at least the print area in the first map image; and acquiring second map data from the server through the communication interface, the second map data being indicative of the second map image.