Slit-scan imaging: peripheral and strip photography

A photographic technique where a camera "sees" the subject through a narrow slit. In still photography this can enable the "unrolling" of a rotating subject (as in the examples below) a process termed peripheral photography.

360° object 'movies' of the lekythos, krater and sculpted head above can be viewed in the 360° Objects section of the site.

Closely related to peripheral imaging is the technique of streak photography, where a rotating object is recorded over a time interval and then a single row or column of pixels extracted from each image in the series. These rows or columns of pixels are then stacked to create a still image with a horizontal or vertical time dimension, as seen in the examples of an iris and apples below.

Another variant of slit-scan imaging involves moving the subject past the slit (or vice versa), termed strip or scanning photography, resulting in an image free of perspective distortion (at least in one axis) as in the model train image at right below.

See the 360° Objects section for a time-lapse object 'movie' of the iris rotating and opening, and click here for a more detailed version of the model train strip image.