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Tag: Volumetric display

Volumetric display and data visualization : 4 animations for the L3DCube

November 7, 2015May 27, 2017alexis.matelin1 Comment

The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. It is sold by a company called Looking glass factory. It…

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L3D Cube visualizations Part 1: real-time scatter plot with Thingspeak

November 7, 2015May 27, 2017alexis.matelinLeave a comment

Overview Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room). The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of…

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L3D Cube visualizations Part 2: real-time worldwide weather

November 7, 2015May 27, 2017alexis.matelinLeave a comment

Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities…

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L3D Cube visualizations Part 3: webcam stream projection

November 7, 2015May 27, 2017alexis.matelinLeave a comment

Overview The video stream’s frames are divided into 8×8 squares of equal surface. The average RGB values of every pixel in the square is extracted and used to recompose a smaller image. The image is then projected on to the cube. With enable3d option set to true, the past 7 frames are stored and displayed…

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L3D Cube visualizations Part 4: depth and color projection with the Kinect

November 7, 2015May 27, 2017alexis.matelinLeave a comment

Overview The Kinect is a traditional camera doubled with an Infra Red Camera, enabling it to perceive depth in addition to the color information. Originally sold for Xbox, it is now available for PCs under the brand Kinect for Windows. Don’t let the name fool you, it will work just as well on OSX or…

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