Kid, you will have two family heirlooms. Remember to uphold justice and uphold justice... Study hard and make progress every day.

Virtual display technology has infiltrated into daily life from its appearance to development, and then to the current popularity. Each of them has different characteristics and has been applied in different fields.

As a branch of virtual display technology, AR augmented reality is low-key and practical, especially in children's teaching. It attracts children to learn new things and experience high-tech in a unique and novel way, which improves their learning pleasure to a certain extent.

Xiaoxi Knowledge Magnifier is a new intelligent product with AR recognition function. It has a unique set of image recognition algorithms. It mainly uses object recognition and AR augmented reality technology to develop children's intelligence and enhance children's cognitive learning interest through voice activity communication and virtual interaction, which can be seen as the transformation and upgrading of traditional early education machines.

Three sets of AR learning cards are included with the package, which need to be identified with a dedicated APP, and the APP corresponds to the card one by one. Although it seems that there is nothing special about the card, the algorithm of each different APP is not the same, and it is impossible to read the cards of other manufacturers. After all, APP algorithms make money. However, the display effect of other parts of the APP on the image display of Xiao Xi is different. After scanning the card, the image can continue to display without the card.

In terms of practical functions, Xiaoxi Knowledge Magnifier is actually a tablet or a smartphone that does not support SIM card. Because it is equipped with touch screen, front and rear cameras, system, WiFi function, power button, speaker and MIC... It just makes the appearance of a cute giraffe toy for children. Of course, the outer layer of packaging is not only beautiful, but also important for safety and fall prevention. Don't worry about children biting or littering.

Xiaoxi's system uses the XIUI based on Android 4.4. The hardware configuration CPU is a quad core MTK M8382 (1.3GHz), the GPU is Mali400, the memory is 1G, and the internal storage space is 8G. The configuration is similar to that of a TV box. The screen is a 4-inch IPS high-definition display screen (480 * 800), the front and rear cameras are 500W pixels, support 1080P, and the battery capacity is 2400mAh. It takes about 1 hour and 53 minutes from low power off to full charge. Also, the screen comes with its own film.

Xiaoxi UI gives people a simple and elegant feeling, with a little fresh feeling. There are not too many built-in applications. First of all, there are AR education related software. In addition, there is its own application market. It has the function of photo recognition. It even has the Tiantian P chart software, which surprises my game.

Let's try AR education first. After all, it is a popular application. The only reminder is that you need to follow the instructions and scan the QR code on the instructions to activate the application. AR education starts from the start to the application page (Figure 2), because there is a long animation, about 14 seconds, while clicking the camera to turn on the camera is a little slow, about 13 seconds.

APP software is very sensitive. In dark places, as long as the pattern can be seen through the screen, that is, the camera can recognize it, the card content can be directly obtained. Even if you scan part of the page, the content can be displayed. The APP plays the picture content in both Chinese and English, and also introduces it in Chinese, so that children can learn more about it. The image can be rotated, moved and zoomed in and out by finger operation, and a series of movements can be displayed by clicking the image.

As can be seen from the above, the background has no picture and the image is still displayed. This is different from other APPs, because the image display in other APPs must keep the card within the camera's photographing range, and the image will disappear after removing the card. Therefore, Xiao Xi has advantages in image display.

The speech recognition rate is relatively high, which can accurately search results or execute commands, including playing music, querying word encyclopedia, voice interaction (human-computer dialogue), etc. However, this voice wake-up function is a bit lame. No matter whether it is powered on or not, it cannot wake up through "Hello Little West" in sleep mode. Only the wake-up system page can use "Hello Little West", which is a bit inhuman. At least like Siri, it can wake up by voice when power on and sleep mode.

Character recognition is the OCR function, and the recognition rate is already very high, especially in the online mode, the accuracy of Xiaoxi in character recognition rate can be said to be 100%. After trying five different Chinese articles, it can be 100% recognized. If your accuracy is low, try adjusting the light. If you fail again, it may be that there is a problem with the scanned article or your equipment.

In contrast, the situation of scene recognition, object recognition and photo recognition is relatively low. Scene recognition is similar to Chinese English translation. It is analyzed according to the content of the pictures taken, and displayed in Chinese and English. At the same time, there are Chinese and English voice plays. Learning English is not good, but the recognition rate is too low. Object recognition refers to where to scan. One common feature of the three is that the shooting angle is different, and the recognition content is displayed differently. Therefore, if you want to improve the recognition rate, you can take photos of representative parts, such as iPhone keys, cactus individuals, etc.

Since it is an electronic toy for children, the management of use time, that is, children's mode, is particularly important. Xiaoxi provides the corresponding APP, which can be set and controlled remotely. The first account bound to the device is the administrator. You can manually add a home account and make video calls with each other. Video calls initiated from the APP end are automatically connected in five seconds by default, regardless of your child's willingness.

In terms of restrictions on use, there are only some preset behaviors in the "good habits". To limit children's use through time settings, it is actually to let children perform certain behaviors by locking the screen. The maximum time is 4 hours. However, user-defined options, such as setting to take medicine on time, are not supported. In addition, they cannot be set by time period, such as 20:00-8:00 prohibition.

Simply make an overall evaluation of Xiao Xi. AR teaching and voice interaction may be said to be a standard function in children's intelligent learning devices at present. As a learning tool for children, Xiaoxi can be seen as an upgraded early childhood education machine. Compared with some products on the market that use a flat plate with a base and call themselves children's robots, first, it has its own battery, which is highly portable and can be carried without fear of falling. Second, it is more practical, with a variety of built-in recognition software AR education and the attached AR card, the "shoot and learn" mode, allow children to experience novelty while learning more intuitively, improve the interest of exploration, and teach in fun. It is better to learn in play. The first part that I hope to focus on is the performance of voice interaction, which can correctly wake up voice functions in different modes, whether sleeping or calling program pages, and optimize the voice part to reduce the mechanization of voice. The second is to improve the performance and accuracy of object and scene recognition,

Remind parents that for some pseudo intelligent children's learning robots on the market, parents should not be confused by the publicity and appearance. They should compare and choose more. The ones with high price and more functions may not be the best.