On the navigation map information point (point) of the quality and quantity – navigation maps, navigation instruments – Automotive industry-hc360 HC Network
The number has been optional Navigation Instrument are most concerned about the topic, but how much interest is required? Interest is PointofInterest the name and often referred to as POI, is the navigation map mark the contents of a class of facilities. Navigation map of the restaurant, Hotels , Tourist attractions, hospitals, parking facilities, are the map of POI. Because the number of POI is the most easy navigation map user acceptance of a factor, so this year was a lot of navigation maps, navigation systems manufacturers have seized this blasted propaganda. Impression or even millions of POI maps produced, and consumers in the lack of ability to judge the case of the map, and also the number of POI is approved. However, the standard measure of navigation map is not only simple POI, POI has not only the quantity that simple. According to the Chinese Academy of Social Sciences in June
just released "Urban Blue Book" statistics, the domestic big cities in 118, 39 mega-cities. Who claims to have 10 million POI-level map, at least in every big city to collect millions of POI near it, think about it, really can be used to the. Even in Beijing, Shanghai, as China's largest city, would still be without access to so many.
Personal feeling, warm publicity POI number of vendors, and died a few years ago bit CPU frequency the same as those computer companies, aims to not familiar with these concepts, an urgent need for a quantitative standard of people. CPU's computing power, after all, rigid targets for a good navigation map, POI Quantity and Quality of Qi must be held.
Some may ask: POI What is quality?
I am saying is, POI to have the accuracy, availability, quantity makes sense. Currently still in development stage, government agencies, major factories and enterprises may not change the location information, can point to those little hard to tell a POI, such as the smoke along the street of some small hotels, like this small POI today is that people who may weeks or even days after a different name, and some even changed, but so long as laundry rooms or restaurants. To know not to update the navigation map can be updated immediately, and will not speak of navigation maps from the collection to production, encryption, review, publication of a long period of time, just to send people to maintain that 10 million of POI points, not thousands collection of people with this team is not possible to maintain its accuracy, and further learned that several major domestic enterprises have not a navigation map with the strength. Accuracy is an important factor in the quality POI should pursue every POI is a real and effective, which requires precise location of POI information accurately.
POI statistical methods may be different. Pursuit of the number of POI, it is estimated that some manufacturers will map into multiple POI do a POI. This amount is derived does not make sense. More importantly, the relationship between the POI and road, POI and POI smoothed relations between the smooth, so that will be easy to use navigator. Have the quality to speak of such a POI.
In addition, the previous POI, only contain the name, location and classification. But now the POI project also includes the operator, phone, hours, or even photographs. This increased the depth of POI information, and light from the quantity, is a measure not of this.
No accuracy and timeliness of the POI point for the navigation map user is there any significance?
I am a professional editor from Hardware Wholesale,
and my work is to promote a free online trade platform.
http://www.hardware-wholesale.com/ contain a great deal of information about
quartz crystal clocks , sonic boom alarm clocks
welcome to visit!
Processing your request, Please wait....
