Photographic Knitting Club

Aug 02 2020
Aug 22 2020
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Nov 19 2020
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Apr 05 2021
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Aug 03 2021


 ︎ Tutorial 

My work often took place through in-person collaborative workshops or classes on accessible digitizing techniques. As we drew upon virtual networks to mitigate the effect of increasingly restricted borders, many people reached out for ways to create digital objects, or to build virtual sites for mourning and reflection. I thought about how my research and participatory processes could help capture a snippet of this social and technological change.

The project “Photographic Knitting Club” is a response to this emerging reality. Photogrammetry, a 3D reconstruction technique that creates models by stitching 2D images together, serves as a bridge between photography and sculpture, producing worlds that exist half-way between the digital and the physical. Breaking down photogrammetry to small steps, we look at the mechanics of photogrammetry that mimics the strange social structures emerging from how the pandemic interacts with technology and forms new social relationships. The process of stitching multiple perspectives resembles the function of an artist––a knot maker and connector of ideas who produces new knowledge.

The name “Photographic Knitting Club” connotes pleasure in the company of others, communal support, and making something by hand from start to finish. Knitting circles are also a predominantly feminine social space where non-commercial production takes place. In this way, the “Photographic Knitting Club” rejects impersonal use and the regime of proprietary technology that often exploits its users for profit. Knitting itself as a metaphor might also be extended to the necessity of how these activities rearrange new borders and boundaries of gender, class, and identity, nationality. Through a feminist perspective, this tutorial offers a tactile / material / philosophical reflection of the mechanics of 3D scanning.

Types of Non-Contact 3D Scanning Methods

Post 3D Scan

3. Laser
a. Time-of-flight: (long range, less accurate)
A laser emits light, and the amount of time before the reflected light is seen by a detector is measured.

Known speed of light = Known round-trip distance.

b. Triangulation: (short range, more accurate)

A laser emits light, and a camera is used to look for the location of the laser dot (object).

(1) The known distance between the laser emitter and the camera and (2) The angle of the laser emitter corner. (3) The angle of the camera corner can be determined by looking at the location of the laser dot in the camera's field of view. With information (1)(2)(3), the distance between the laser and object can be calculated.

For example, LiDAR (Light Detection and Ranging) measures how long it takes for the emitted light to return back to the sensor.
Publicly Available LiDAR Data: USGS

Dream Life of Driverless Cars, ScanLAB Projects for The New York Times