What is Interactive Projection Games for Indoor Playground

Created on 09.16

As a new type of indoor playground equipment based on advanced motion capture technology and virtual reality technology, interactive projection ball has gradually become the main force of the overall upgrade and renovation of traditional indoor playground. Interactive projection ball pit game is a physical pit ball throwing game on a game screen projected on the wall. 

This article will do a detailed technical analysis on its basic definition, core parameters, main stream game mode, and safety and operation parameters.

1. Definition

Interactive projection ball pit game is an immersive entertainment system based on computer vision, projection display and sensor technology. Its basic principle is to use the motion capture technology (infrared sensor) to capture the track of the thrown projectile (usually ocean ball) and then use the image analysis system to output the corresponding action input, which is then synchronized with the live game logic and finally output the feedback on the projected game screen on the wall, thereby establishing the interactive experience between users and the virtual game.

2. Core Components and Their Parameters.

Interactive projection ball pit game is a system consisting of multiple high-tech modules. The parameters of these modules will directly determine the final experience of the end user, and the selection of these modules has a very high degree of flexibility to adapt to different site conditions and investment costs.

2.1.Projection and Display System.

It is the final output unit of visualization for the whole system. The selection of the projection system needs to comprehensively consider the ambient light, projection area and budget. Regarding the parameter selection of projector, brightness and resolution are two variable parameters.

The requirement of brightness is from 3000 to 5500 lumens according to the situation of ambient light. In the case of ambient light being controlled and low light, the brightness requirement is 3000-3800 lumens to meet the basic needs. While in the case of bright ambient light or the projection area requirement is relatively large, it is recommended to choose the projector with brightness of 4000-5500 lumens or more to ensure the clarity and bright image.

In terms of resolution, there is no strict requirement; the basic requirement is 1024x768 to meet the basic game requirements, and it is recommended to choose 1920x1080 (Full HD) mainstream resolution, even 4K ultra-high resolution display can be selected for high-end configuration. In addition, to ensure the excellent color performance, the mainstream display technology used is 3LCD. In addition, the total response time of the system must be controlled within 50ms to ensure that the user can see the instant feedback after hitting the ball.

2.2.Control and Sensing System.

Brain:Game host It is usually an industrial PC or personal computer (Win operating system), known for its stability and compatibility, used to quickly and smoothly process graphic computation and sensor data. Interactive part of the system is the motion capture module, which uses the device such as an infrared camera or LiDAR to track the movement of the ocean balls. The data is then interpreted by the back-end motion capture and analysis software to drive the game engine.

2.3. Interaction Media and Auxiliary Devices

The ocean balls that players handle directly are the main interaction medium. They are typically manufactured from environmentally friendly and non-toxic PE (Polyethylene) material. Some high-standard products use food-grade material to ensure the safety of children. The specification is typically a thickened, 8cm diameter safety ball. Safety balls are designed to avoid the risk of children swallowing the ball and improve the durability of the ball. In some venues with extremely high safety requirements, soft balls made from EVA foam are used. With the strict requirement that the weight must be below 150 grams.

In addition, some of the locations may install the ball blower as an optional auxiliary device into the Ball pit. The balls in the pit are blown up from the ball blower, which keeps the balls pass up from the ball pit and shoot it out.

3. Game

Mainstream content in the game library is extremely diverse in order to attract and retain players by offering different gameplay. Mainstream game content is typically divided into reaction-based games, such as the variation of "Whac-A-Mole" games, which are required to complete certain tasks with as quick reaction as possible; target shooting games, which are required to throw balls at certain monsters on the screen or certain targets on the screen to get points; more level-up mode games, which are required to complete harder levels by completing easier levels first in order to improve the replayability of the game; and competitive mode games, which are required to maximize the social component of the game by playing in teams, with two players on one side, which greatly improves the competitiveness of the game.

4. Regulations on Safety and Operation

This type of children playground equipment must place safe operation in the first place and must be considered at all links from procurement and installation to daily management. During the procurement link, it is necessary to ensure that all equipment meets the national toy safety standards, that is, non-toxic and safe design. In the daily operation link, it is necessary to inspect and maintain the equipment such as the projector and sensors. The host computer should be placed in a well-ventilated place without children. Venue safety must also be considered. The floor of the area where children interact with the equipment should be cushioned. The wall should be smooth and without sharp objects. In addition, the staff should actively guide children to play according to the rules of the game. Children are not allowed to throw balls at each other, and they should control the strength of throwing balls. Owners should note that damage caused by human reasons such as crushing and impact, or even force majeure such as fires are generally not covered by the warranty. Therefore, it is necessary to do a good job in daily management.

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