Overview
Russell A. Kirsch (1929–2020) scanned a photograph of his three-month-old son Walden into the SEAC computer in 1957 as a 176×176 array of binary values — the first digital image. He spent his career at the National Bureau of Standards working on image processing and pattern recognition, and later argued that the square pixel had been a mistake.
What You Need
- Lived: 1929–2020, United States
- Anchor year: 1957 — the first digital image
- Strand: overlooked
Steps
The problem as it stood
Computers processed numbers. There was no way to get a picture into one, and therefore no possibility of computers analysing, transmitting or storing images at all.
What he actually did
Kirsch built a rotating-drum scanner for SEAC, one of the earliest stored-program computers, and captured a photograph as a 176×176 grid of binary values — no greyscale, just black or white per cell.
How it worked
The scanner sampled the photograph at intervals in two dimensions and thresholded each sample. The size was set by SEAC's memory. Sampling a continuous image spatially is the two-dimensional version of what Nyquist described for signals in time, and the same consequences follow — undersampling produces spatial aliasing, visible as moiré.
What it made possible
Digital image processing as a field, and everything downstream: JPEG, digital broadcasting, medical imaging, computer vision. The image of his son is in the Library of Congress and appeared in Life magazine's list of images that changed the world.
What happened to him
He continued at the National Bureau of Standards on image processing and pattern recognition. Late in life he publicly regretted choosing square pixels, arguing that other tilings represent curved edges with fewer samples, and worked on variable-shape pixel schemes. He died in 2020 of Alzheimer's complications.
Where the credit landed
Kirsch is credited for the first digital image and largely forgotten otherwise, and his own assessment is worth recording: he considered the square pixel an arbitrary early choice that became permanent because everything built on it. That is a fair description of a great deal of this corpus — 35mm, 1.33:1, interlacing, one volt per octave, 44.1 kHz. Early decisions become infrastructure and stop being decisions.
Pro Tips
- The first digital image was 176×176, one bit per pixel, sized by the computer's memory.
- Spatial sampling has the same aliasing consequences as sampling in time — moiré is the visible form.
- Kirsch himself regarded the square pixel as an arbitrary choice that became permanent.
Knowledge Base
What You'll Learn
Every digital image descends from a picture of a baby, thresholded to black and white.
Arbitrary choices that became infrastructure
This corpus is full of them. Dickson set 35mm and 1.33:1 for practical reasons in the 1890s and both governed image geometry for a century. Schröter's interlacing is still in broadcast standards. Moog's one volt per octave persists in modular synthesis. 44.1 kHz was chosen partly to suit video recorders used as digital audio stores. None was optimal in principle; all became permanent because the cost of changing exceeded the benefit once anything was built on them.
Where This Fits
This guide covers one specific part of the history of media technology. The wider picture — how each link in the chain from capture through transmission to display was actually built, who built it, and why the credit so often landed somewhere else — is in A History of Broadcast Technology: The Chain From Capture to Screen, which frames the discipline as a whole and links out to the detailed guides underneath it, including this one. If you are starting from scratch rather than solving a specific problem, read that first and come back here.
FAQ
Q: What was the first digital image?
A: A 176×176 pixel scan of a photograph of Russell Kirsch's infant son Walden, made in 1957 on the SEAC computer. It was one bit per pixel — black or white, with no greyscale.
Q: Why did Kirsch regret square pixels?
A: He argued that other tilings can represent curved and diagonal edges with fewer samples, and that the square grid was an arbitrary early convenience that became permanent because everything was built on it.