日常中光影的轉變常帶有時間流逝的意象，而透過影子我們才能知覺光的存在。《伴日》這件作品透過將觀者的身影主動的加入虛擬的空間，試圖帶給觀眾對於時間與空間更直接的感受。

《伴日》這件作品包含了一個呈現房間的燈箱、與一個投影畫面。當觀者走至燈箱前觀看燈箱內容時，Kinect攝影機會透過Processing即時的偵測人體輪廓，並在偵測到的時候觸動影像即時合成軟體Arena，使偵測到的人體輪廓疊合於光影的影像上，並同時播放背景環境音，讓人彷彿置身於燈箱所顯示的房間內，在一個夏季的午後，在房間牆上的陽光中看見自己的影子。

​

The changes of natural light often reflect the passage of time, and one notices the existence of light through shadows.

 

With the light allows the audience to experience time and space more directly by having their silhouettes put in virtual space.

This work contains a light box that shows an image of a room accompanied by background sound and a projection. The audience was detected by a Kinect camera with real-time processing software when they appear in front of the lightbox.

The detected contours will be merged by software onto the shadow on the wall and create an impression that the audience is inside the room displayed in the lightbox.

 

The content of the lightbox is a room that presents a sense of residence. Some clues are deliberately arranged in the subtleties. The balcony outside the windows which fulls of hanging clothes, a cooking pot on the table, and a piece of paper which indicate the contract of the rented room. In the projected image, it shows the sunlight coming through the same clothes-hanging-balcony and laying the shadow on the wall. When viewers walk in, their shadow will also appear in the light, and the slowly moving sunlight brings out the feeling of time lapse.