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Cyclist baffled by optical illusion: 'The ground's moving sideways!'
A cyclist was left baffled by an optical illusion on a New York park which made it appear as though the ground was moving sideways.
Photographer Jeremy Cohen was cycling through Corona Park when he started filming himself on his bike.
As he pointed his camera to the ground, he noticed a strange effect which made it look like he was ground was moving beneath him.
He shared the clip with TikTok alongside the caption: 'Genuinely curious how this happens.'
The internet was left divided by the video, which amassed 36,000 likes, with some claiming the reason was obvious while others were equally baffled.
New York-based photographer Jeremy Cohen was baffled over an optical illusion he spotted while cycling at Corona Park in Queens
Cohen claimed the ground was 'normal' before he pointed the camera to the ground
'The pattern and shape of the bricks is causing animation as you move. Just like cartoons on a flip book,' a commenter claimed.
Cohen believed this 'made the most sense,' but other TikTok users had different explanations on why the road phenomenon was possible.
Optical illusions are images that can trick one's vision or thoughts.
Despite the potential of leaving individuals frustrated, it can also give someone an idea of how much the eyes and brain work together.
There are three main types of illusions - literal, physiological, and cognitive.
Illusion images are frequently spotted in photography collections, one being by Portuguese photographer Tiago Silva.
Silva, who is known for his optical illusion photography, discussed his photos back in 2019, and how he managed to use a forced perspective when doing so.
'Most of the time it's very spontaneous - when I'm walking through the city, traveling, or at the beach,' he told Business Insider.
TikTok users who watched Cohen's video assumed the illusion was based off his camera work, and one person suggested 'rolling shutter' - a method that records a frame line by line on an image sensor instead of the entire frame at once.
According to that TikToker, rolling shutter wouldn't happen with a global shutter camera, but it could have 'a weird effect on high speed stuff.'
One person wrote: 'It's happening because of shutter speed on the camera. Phones have a rolling shutter that causes objects moving faster than the shutter speed to distort.'
However, one TikToker believed that to not be the reason.
There are three main types of illusions - literal, physiological, and cognitive. Several photographers have created collections based on optical illusions
'It’s not rolling shutter. It’s caused by sampling frequency in relation to the spatial frequency, I.e. aliasing,' a TikToker responded to the comment.
More than one person also said frame rate was responsible for the illusion.
Frame rate is defined as the frequency at which frames in a television picture, film, or video sequence are displayed.
One person agreed and disagreed with this guess and wrote that it was only 'part of it.'
'Part of it is frame rate, but it's also biking speed and the tessellation of the hexagons in one direction compared to another,' the person wrote.