Can't find the way after watching the navigation? This may be the inner pain of many "road idiots". Can the pointing tool be more intuitive? The AR walking navigation, which is known as the gospel of "road idiots", may be able to do it. In order to solve the "road idiot" problem, AutoNavi announced recently that it will cooperate with OPPO to launch the first AR walking navigation using SLAM technology in China. What is this navigation system? Mobile AR walking navigation refers to the combination of AR technology and navigation functions. The panoramic route and destination location can be seen through the mobile phone camera, which is convenient for users to distinguish the direction. In the navigation process, users do not need to repeatedly check the route information on the map, but only need to combine voice navigation, real street view, and follow the directions of arrows or cartoon characters to find the direction and reach the destination smoothly. So, can AR walking navigation really help "road idiots"? How does its accuracy compare to two-dimensional navigation? What technical bottlenecks still need to be broken? Still at the exploratory stage, user experience needs to be improved Generally, with traditional two-dimensional navigation products, users need to constantly observe the real world and compare them with the two-dimensional map on the mobile phone, and then identify the direction they should go forward. Many people feel that when using a two-dimensional navigation tool in an unfamiliar environment, because they are not familiar with the road conditions, this "map-to-road mapping" will distract the driver a lot of energy, and even increase the probability of traffic accidents. AR walking navigation attempts to solve the above-mentioned problems. It deeply integrates the map, mobile phone camera and AR technology. The camera will present everything in the real world on the mobile phone screen. At the same time, virtual models such as cartoon characters and indicator arrows will be superimposed on the existing image. This virtual model can guide pedestrians. direction. During the guidance process, the user can reach the destination just by looking at the screen, without having to rack his brains to "translate" the information on the 2D map. "For pedestrians, AR navigation does provide some help, but there are still problems in tracking accuracy and user experience." Weng Dongdong, a researcher at the Institute of Optoelectronic Information Technology and Color Engineering, Beijing Institute of Technology, explained to a reporter from Science and Technology Daily that traditional two-dimensional GPS navigation The accuracy requirements for positioning and direction are relatively low, even if there is an error of a few meters, it will not have much impact on navigation. However, AR navigation has very strict requirements for accuracy, the accuracy must reach the centimeter level, and the direction must be accurate to a few tenths of a degree. This means that as long as there is an error of a few tenths of a degree, users who use AR navigation will feel that the road signs "float" on the screen, which will affect the accuracy of the instructions. In addition, AR navigation requires real-time monitoring of the environment, and mobile phones must keep moving along with the progress. However, if the mobile phone is shaken frequently, the picture of the image will change quickly, which will easily lead to the failure of tracking, and the experience of AR navigation will not be so good. "Compared with a few years ago, although AR navigation has made great progress nowadays, the user is the examiner. If you go from 10 points to 59 points, the examiner still fails, although this improvement process requires a lot of effort. "Weng Dongdong said frankly. "Even if mobile AR navigation can be very accurate now, the way to use it is just that the user takes a look and then continues to walk. Keep holding the mobile phone to watch, many people will find it unnecessary." Weng Dongdong believes that mobile AR navigation does not meet the requirements. User habits. However, Weng Dongdong believes that the concept of AR pedestrian navigation is not wrong, but the current product is still in the early stage of exploration, and there is still a long way to go to the mature product form. "At present, this type of AR navigation is more of an tentative transitional product to let everyone find the feeling. Companies use this to collect some user experience as feedback information and test some new ideas." Hardware affects the sense of experience, and breakthroughs require basic research assistance In Weng Dongdong's view, an important reason for the weaker AR navigation experience now lies in the hardware. "The most breakthrough in AR navigation technology is the'end', that is, the hardware device." In his opinion, AR navigation on smart glasses is more practical than on mobile phones, but it is difficult to achieve large glasses in a short time. Scale popularization. In addition to mobile phones, hardware devices that can be equipped with AR technology include fixed AR devices (virtual dressing glasses), head-mounted displays, smart glasses and other hardware devices. However, compared with mobile phones, the market share of other AR devices is very limited. According to a related market report released by IDC this year, the global sales of tethered AR devices (with PC/mainframe) in 2017 were about 30,000, all-in-one AR devices were about 120,000, and non-screen AR devices (plug-in mobile phone boxes) were about 450,000. The report predicts that in 2018, the sales of tethered AR devices are expected to reach 120,000, all-in-one AR devices are expected to reach 290,000, and screenless AR devices are about 820,000. Compared with a few years ago, the sales of these devices have improved significantly, but compared to mobile phones with annual sales of hundreds of millions of dollars, the market for these AR hardware is still too niche. The primary reason why the market space is difficult to open is the price. Dr. Buhamri, a French market research company Yole Technology and Market Analyst, once said that although AR technology has broad prospects, it also has limitations. Its promotion cost is very high, especially in the price. For example, Microsoft HoloLens is a head-mounted display released by Microsoft in 2015. It is well received by the industry, but its price of 30,000 yuan is prohibitive. Another barrier to the popularity of AR is reflected in technology. "At present, there is no AR device with a particularly good experience in the market." Weng Dongdong said. Zheng Yu, CEO of AR startup Lingxi Shimmer, expressed similar views. In an offline salon, taking the popular AR game "Pokemon Go" as an example, he said that the real AR game experience should not need to use a mobile phone, but the real Pikachu can be seen directly on this table. (Cartoon character in "Pokemon Go"). "This is a very important concept. If we use the mobile phone as an intermediate medium, the AR effect will be greatly reduced." Zheng Yu said frankly that there is currently no AR device that can show this effect. How long does it take to do the "end" of AR navigation? This depends on the speed of development of basic research in related fields. "Mainly basic research in optics, from principle to process, from sample process to mass production process, it takes a long time." Weng Dongdong emphasized that hardware development is inseparable from technological progress, and technological progress and basic research Inseparable. However, when the hardware is accumulating energy, the software can take the lead. "No matter what hardware device is used, the software technology of AR navigation is the same, such as GPS, SLAM, computer recognition, background computing, big data, etc.. Before the hardware is ready, software problems can be solved first." Weng Dongdong said.
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