If you were shopping in this part of the street that day you could visit Turle's the grocers, Babbs the tailors, drapers and linen shop, Woollatt's the chemist and drugist and the General Furnishing store (only recently converted from the old White Hart Inn). It can be dated to between 18 from the census records. Hidden inside each image is an object which appears in 3D when viewed correctly. This image is created from one half of a stereogram photo. Your brain sees the image in 3-D because your brain thinks your eyes are looking at the same thing when they're actually looking at identical squiggles in slightly different places. A stereogram is a 3D picture within a picture. ![]() To sum it up: your brain is constantly trying to make sense of the things you experience - so in this case it allows your brain to disregard the squiggley lines themselves and concentrate on the image behind them. Download scientific diagram Images of a scene (top pictures) stereogram given by SVS (bottom left picture) and depth profile of a scenes horizontal cut. At first sight a stereogram looks like an abstract image made of repeatable patterns. Your brain solves discrepancies between what each eye sees by allowing for some points of the pattern to seem nearer to you than others are. A stereogram is an optical illusion of stereoscopic depth created from a flat, two-dimensional image or images. Because the squiggles are identical your brain doesn't register that each eye is looking at a different one but instead perceives a non-existent (fake) depth to the picture. Finally, a concrete three dimensional object will emerge from the depths of the picture. Some parts of the stereogram will start getting closer quite soon while others may seem to move further away from your gaze. Seeing the Illusion When you force yourself to focus behind the image, you force your eyes to each look at different squiggles instead of the same one. Wait till the picture turns blurry before your eyes and then move the stereogram away from you very slowly. Your brain then works out how far away the picture is from by comparing the different views from each eye. When your eyes focus normally, the line of vision from each eye meets in the same place on the page. That's because your subconscious decodes differences in the repeating pattern of the fuzzy lines. However, if you view it stereoscopically (meaning your eyes focused behind the actual picture), a three-dimensional image forms. ![]() When you glance at a Magic Eye (or a stereogram, technically speaking) it looks like a fuzzy abstract picture. What's the deal? Magic Eye - Seeing the Surface Squiggles They're the ones that show you a 3-D picture when cross- your eyes, blur your while they look at them. We've all seen those funny pictures at the mall or on the web - those ones that look like a cross between a bad 80s outfit and a fuzzy TV screen.
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