On this page I’ll show painting demonstrations and also vision science presentations important for the lovers and makers of visual art. It’s important for aficionados of visual art to understand vision.
Scroll down to see my painting demonstrations and vision presentations. I’ll add to this page over time as often as I can.
Vision Presentation 1: The Temporal Nature of Vision and the Busbarn
I created the Animation below in 1998 to illustrate the temporal nature of our visual sensation and perception. Pardon its coarse transitions and lack of resolution. I used two different paintings I did of a view of Magazine Street in New Orleans looking toward the old Bus / Streetcar Barn before it was remodeled as a Whole Foods store. Both paintings were done on a partly cloudy summer day – one with the sun behind the clouds and one with the sun out. I made transitions between images of these paintings in Photoshop.
Rather than measuring color and value absolutely, our vision detects only spatial and time (temporal) changes in these quantities. As the animation starts, we are standing outside on a partly cloudy day with the sun shining out from behind the clouds, illuminating the surroundings with bright and warm colored sunlight. When the sun goes behind the clouds, at first the surroundings seem to become very dark and cool in color because our vision is contrasting this moment to the previous moment when sunlight prevailed. After a few seconds the effect of this time change in color fatigues and the view seems to become lighter and the cool cast that we see everywhere gradually gives way to our seeing more of a balance between warm and cool colors. Similarly, when the sun comes back out, at first we experience the jarring sudden transition by seeing a brilliant warm cast to the surroundings which again fatigues over time gradually to become darker and more balanced between warm and cool colors. These transitions have been sped up to heighten your awareness of them, but you can slow them down (or speed them up) my manually advancing the animation.
Painting Demo 2: Audubon Park Bridge
Thanks to my student Tommie Larsen for providing the good quality digital SLR images from which this demo presentation was extracted.
I zoomed in and cropped around the painting in the rest of the photos of this demo and increased the contrast in the mid-tones so that the canvas would not be lost in the shadows. This causes the area around the canvas (including my arm occasionally) to be a bit washed out.
Painting Demo 1: Victorian House on St. Charles at Cherokee