'Portal’是一种沉浸式的、响应式的视听装置，模糊了现实和虚拟空间的界限——这是对约瑟夫·阿尔伯斯的《向正方形致敬》的数字引用——为谷歌Pixel在柏林König画廊举行的发布会而创造。
设置
一座高8米的单体石雕位于20米长的镜面走道的尽头。在石雕中嵌入的是一个格式填充的LED屏幕，面对走道。
我们通过应用红外摄像头阵列来跟踪走道上移动的人员，并使用vvvv系统和Max/MSP补丁将这些数据转换，以便控制视觉和声音。
踏上走道会触发强烈的光亮，从一端走到另一端会使视觉效果沿整个颜色光谱进行变化。参与者数量控制着安装在视听两端的复杂性和深度。
审美
在视觉效果方面，我们玩弄了屏幕上可见的长方形、彩色和脉动的拱门的透视，随着更多的参观者占据走道，越来越多的长方形出现并沿z轴拉伸。
这种效果与镜面走道中的反射相结合，营造出漂浮在空间中并穿过一个门户进入一个拥有无限深度的房间的幻象。
响应式声音
这种累积效应也在音频上得到了体现。当一个观众站在走道上时，一个精致、嗡嗡作响的声音在空间中移动。当红外传感器注册更多的人时，音乐变得更加细致入微，深度增加，当观众数量众多时，音乐也变得更加广泛并建立到一个戏剧性的高潮，在整个巨大的空间中回响。
难忘时刻
当走道上的观众距屏幕一米时，可见的门户变成了一个统一的、色彩鲜艳、格式填充的表面。观众出现在明亮的背景中，成为一个黑色的剪影，从而营造出非常难忘的时刻。
这个装置向公众开放了两天，在此期间，它也被用作音乐表演的舞台。
‘Portal’ is an immersive and responsive audiovisual installation that blurs the limits between real and virtual space – a digital citation of Joseph Albers ‘Homage to the Square’ – created for the Google Pixel Launch at König Galerie in Berlin.
Set-up
An eight-meter-high monolithic object was situated at the end of a twenty-meter-long mirrored walkway. Facing the walkway and embedded in the monolith is a format-filling LED screen.
Applying an array of infrared cameras in order to track the people moving on the walkway, we converted this data using the vvvv system and a Max/MSP patch, so that it controlled the visuals and the sound.
Stepping onto the walkway triggered a bright impulse and walking from end to end shifted the visuals through the entire color spectrum. The number of participants controlled the complexity and depth of the installation on both the visual and the auditive sides.
Aesthetics
With the visuals, we played with the perspective of the rectangular, colored and pulsating arches visible in the screen, so that as more visitors occupied the walkway, more rectangles appeared and stretched along the z-axis.
This effect, in combination with the reflection in the mirrored walkway, created the illusion of floating in space and moving through a portal, into a room with infinite depth.
Responsive sound
This cumulative effect was mirrored by the audio. As one viewer stood on the walkway, a delicate, whirring sound moved around the space. As the infrared sensors registered more people, so the music became more nuanced, gaining in depth, and when large amounts of viewers were present, it also gained in breadth and built up to a dramatic crescendo, which reverberated throughout the enormous space.
Memorable moments
When the viewers on the walkway reached a distance of one meter from the screen, the portal that was visible morphed into a uniform, bright-colored, format-filling surface. The viewer appeared as a dark silhouette against this bright background, thus providing a very memorable moment.
The installation was open to the public for two days and during this time, it was also used as the setting for musical performances.
