The dataset from our paper on Visual Search in 3D environments is now available for academic use.
Wang, Panchadsaram, Sherkati, and Clark. "An egocentric video and eye-tracking dataset for visual search in convenience stores." CVIU 248 (2024).
Please contact me if you wish to get the dataset.
Photo of a tv screen showing a repeated black white and red diagonal pattern
Interesting glitch on tv.
Interesting texture underneath the carpet
What’s the faint curved line on the left?
Birthday cake abandoned on the mean streets
The back room at the restaurant (Main Street Vancouver, December 2017)
A shadow of a tree looking like a scary monster on the side of an RCMP station in Westmount Quebec, with a door bearing a large number 13 inside a circle
Happy Friday the 13th
A small statue of a praying baby Buddha sitting on a stone ledge outside of the main Buddhist temple in Seoul Korea
Peace
Fractal Patterns of ice crystals on my office window on a very cold day in Montreal
The geometry of winter
Drs. Mackworth and Poole recognized for making AI education accessible to students worldwide
UBC Computer Science Professors Emeriti Alan Mackworth and David Poole were awarded the AAAI/EAAI Patrick Henry Winston Outstanding Educator Award for developing free online resources to learn foundations of AI. Congratulations! Read more: www.cs.ubc.ca/news/2026/02...
When I was in grade 8 (in Richmond B.C.) our teacher put a small B&W TV on his desk and we all watched the final of the Canada-USSR hockey Summit series.
Photo of a large van with pictures of random people on it including pope John-Paul, taken in front of the Pantheon in Paris circa mid 2000’s. Image is rather faded with a sepia tone. A man next to the van walks towards the camera contorted with a subtle strangeness
A rather strange photo my camera captured in the mid 2000’s in front of the Pantheon in Paris. I don’t know why the image came out with such a strange faded appearance
this is who runs this account
She
I like how they played “All by myself “ right afterwards
Congratulations Alan and David! Well deserved!
Photo of Granville street in downtown Vancouver in late December 2018. Shows a grizzled man walking towards the camera with a young woman walking further behind him. The entrances to shops are cluttered with trash. The iconic Orpheum theater sign dominates the skyline in the distance.
Vancouver (2018)
(Vancouver 2018)
A spooky track for #Halloween! 🎃For my friends in Vancouver, which has many many crows (who are not your friends).
soundcloud.com/jjclark-cylo...
Harvard has slashed the number of Ph.D. student admissions slots for the Science division by more than 75 percent and for the Arts & Humanities division by about 60 percent for the next two years. www.thecrimson.com/article/2025...
After destroying the people of Ib, the high-priest of Sarnath was found dead, and the word "DOOM" scrawled on the altar. For years after, the city of Sarnath flourished, but one day, at the height of its power, the town vanished.
Made a track inspired by this:
soundcloud.com/jjclark-cylo...
Portland 2025 by artist Nikkolas Smith, showing a person in a frog costume facing down a row of masked and arm ICE officers clad in black uniforms.
The cover of a collection of H.P. Lovecraft's short stories, entitled The Doom That Came to Sarnath
H.P. Lovecraft is widely acknowledged to be a racist, but his 1920 short story, "The Doom That Came to Sarnath", can be interpreted as a cautionary tale about the dangers of demonizing the "Other". The leaders of Sarnath killed off the people of Ib, who had a green hue, flabby skin and bulging eyes.
IMHO this is the right way to go. General purpose "know-it-all" systems are too big, too expensive, and ineffective compared with small, cheaper to run, domain-expert systems. A collection of these experts interfaced to an agentic front-end would be much more cost-effective and higher performance.
I did a postdoc at Harvard in 1985, and was on an H-1b visa. There is no way in hell I would have gotten the position if the university had to pay another $100k.
Some peaceful calming waves
Transcription of a voicemail message "See he does massage with the clocks the pickles so speak on them just stand along. I think give it just talk. Are they supposed to have that supposed to my messy bun?"
The attached image shows the transcription of a voicemail message left on my cellphone provided by Bell Mobility. The voicemail was a message in French to set up an appt for our condo's smoke alarm inspection. Apparently Bell assumes messages are in English, which is strange for a Quebec service.
This post from Terence Tao, on the threats to research and science, should be broadly shared wherever you can. It is measured and clear: newsletter.ofthebrave.org/p/im-an-awar...
Color. Is color in the world or is it in the mind? There is a lot of philosophical discussion of this question.
Very cool. When I was in grad school I took a course on observational astronomy. One of my assignments was to plot the density of galaxies in the Virgo cluster by manually counting galaxies in a grid overlaid on a large print from the Palomar Sky Survey.
Vinod's person detection algorithm was subsequently used by PhD students Carmen Au (now at Meta) and Sandra Skaff (now with Nvidia) as the frontend for an anomaly detection algorithm (works by using file sizes of bzip compressed images to compute mutual information (published in ICPR 06, 49 cites)).
