Figure 11. Textures
At the top and the bottom of this picture the blur distinct the middle of the picture. The dark forest stroke discriminate the white bottle cap and the sky. The different fruit is also recognizable though contrast.
In this advertisement all details are in the middle of the poster. You will receive the most information about the whole advertisement in the sideway direction. The eyes are constantly make movements from the Innocent bottle to the fruit pile and back. However, if you look more detailed, at the innocent bottle itself, the sideway direction still gain you the most information. For instance, you want to read the text on the bottle, your eyes will make a movement from the left to the right.
Only the size of the bottle will demand an up-down movement.
As we are very sensitive to whether something is exactly vertical or horizontal, the innocent bottle strikes you immediately. It is only rotated a few degrees from the vertical, see figure 12, yet this little difference is clearly visible.
Figure 12: Vertical or not?
Madonna of the Harpies
-Andrea del Sarto’s (1517)
Madonna of the Harpies (Madonna delle Arpie) is a painting made by Andrea delSarto’s in 1517. In 1984 the layers of dirt and overpainting are removed and the rich colors of the work became visible.
Figure 13. Madonna della Arpie by Andrea del Sarto
Chapter 2 – What we can easily see
What directly pops out when you look at the picture is the polygonal pedestal, centrally located on the lower part of the painting. The pedestal is the most shining object between several objects with a more flat character. The colors are light and the object contains some highlights. The human eye is triggered by the high degree of feature-level contrast between the pedestal and the surrounding and a single eye fixation is enough to notice the pedestal. [28] This effect is strengthened by the step under the pedestal, because of the light color and the orientation of the step. Almost all objects in this painting are oriented in a vertical position, even the line in the background of the painting. Conversely, the step is place in a more horizontal orientation. Also on the top and the bottom of the pedestal you can see horizontal orientation. This is horizontally oriented makes the step, and at the same time the pedestal placed on this step, even more conspicuous. [33]
Figure 14: Orientation of the objects Figure 15: Main focus points of the human eye
From the pedestal the eye will make a movement to the right, where the clear red robe of the lady standing next to Madonna draws the attention. From the robe the eye will move straight up, along the clear blue colored mantle of Madonna, to Madonna’s upper part of the body and the child in her arms. The bright colored yellow fabric on the shoulder of Madonna and the light colored cloth on her head catch the eye. Also the child is light colored and the arm and leg of the child contain a subtle highlight, which makes the child stand out from the dark background.
After Madonna the person on the left will become visible. His dress is sober in color and his head almost disappear against the background. It takes a longer time to see all the details, like the books the two ladies have in their hand and the cross in the hands of the man. These objects have almost the same color as the background and are small in proportion to the bigger colored surfaces, like the robes, fabrics, the pedestal and the child. [35]
Chapter 5 – Getting the information: Visal space and time
Andrea made use of the most powerful pictorial depth cue called occlusion; objects that visually block other objects appear closer. Some examples of these occlusions are: the feet of the man on the left are painted in front of the step. This tells us that the man is standing in front of the step. Next to that you can see that the pedestal covers a part of the two angels standing on the left and the right of it. From this we can conclude that the two angels stand behind the pedestal. The hand and the arm of the angel on the right cover a part blue mantle of Madonna. Because of this we know that the angel is holding the leg of Madonna.
The amount of occlusion is reduced to a minimum, which also reduces the amount of depth in the painting. Almost all the persons on the painting stand next to each other and behind them there is only a wall. The minimum of occlusion does ensure that no information is lost. Andrea even made use of transparency to show more or less the whole wing of the left angel, which is actually behind the dress of the man totally on the left. [91]
Figure 16: Foot with the cast shadow and right without
Figure 17: Left an enlargement of the wing behind the transparent robe
Another pictorial depth cue used is the cast shadow. This shadow provides information about the distance between different objects. For example the foot of the man on the left is lifted up from the ground. The cast shadow on the ground helps us to understand the position of the foot and makes it much more realistic. [92, 95] The size and position of the cast shadow of Madonna and the child on the wall shows that they are standing close by the wall, but not against it.
Not only cast shadow helps to understand the position of the objects on the painting, but also shading plays a big role. By using shading the creases in the fabric appear, which shows the way the clothes cover the bodies of the people. The shading is also used on the naked body of the child in the arms of Madonna. These shadings help to make the difference between the limbs of the child and explain his position. Next to the shadings the highlights play a big role in showing the limbs and explaining the child’s position. [92]
The highlights are used on the pedestal too. Here the highlights are not only used to show the different elements of the object, but also to let the pedestal shine. The highlights help here to show the polished texture of the pedestal and that goes for the step under the pedestal to. Andrea used some more highlights on the bodies of the angels and on arms, hands, toes and faces of the people.
Not only small elements of the painting make it come more alive and perceived as 3D, but also the used perspective contributes to this. It looks like Andrea made use of a linear perspective, but during the reconstruction of the vanishing point, all the lines look randomly chosen. That is why it seems more likely that Andrea made use of an oblique projection; he painted the frontal view of the objects and added the sides to it in a way it seems to look realistic. [92]
Figure 18: An attempt to reconstruction of the vanishing points
Chapter 7 – Visual and verbal narrative
The painting of Madonna of the Harpies does not contain much text or textual symbols. The only text is the Latin text on the pedestal. This text is “Ad summu regna tronu defertur in altum” which is translated by art experts into “The queen is transported to the supreme throne high above”.Under this text the date is written in Latin MDXVII (1517) and above this text Andrea del Sarto placed his own signature.3 [130]
The objects on the painting could also tell a whole story. Beside the text there are also some figures on the pedestal. They faces look scared and despaired and they seem to look up to Madonna. Their bodies do not look totally human, because of the very long legs and feet and the wings on their backs. [135]
The main focuses of the painting are the objects in front of it. The background is very clean and sober, to ensure the attention of the viewer will not lead away from the narrative thread. In the middle a woman is standing central and somewhat higher than the other figures on the painting. This let us assume that this woman is Madonna. Because she is the one who is standing on the pedestal with the text it looks like this text applies to her, so she could be the queen and the pedestal could be the throne. The man and the woman next to the pedestal, respectively on the left and the right, are standing on the ground and more to the side of the painting. This makes them look less important. [139] The three characters seem to look to something in front of them which is a little bit lower, because their looks are directed towards the ground. The beaten down eyes of Madonna makes her look a little bit sad. The two people on the side seem to protect the cross and the content of the book.
Figure 19: Pedestal with Latin text
Their bodies are turned towards Madonna, while they look towards the viewer of the painting. The position and facial expression of the angel on the left, holding the leg of Madonna, looks desperate. He wants to stay with Madonna or maybe he wants to be lifted up like the child on Madonna’s arm. [137]
There are also a lot of symbolic objects in the painting, like the cross held by the man on the left, the almost invisible aureoles above the heads of the people, the books in the hands of Madonna and the woman right from her and the child with the angel wings. All these symbols point at a religious representation. Striking is that all these objects are painted very dark and inconspicuous.
The whole representation is very static. The position of the people is very static, especially Madonna standing on the pedestal, which could be associated with a statue. Andrea did not made use of features to encourage the intention of movement, but maybe he even didn’t want to give the viewer the intention of movement. [142]
Fishing boats on the Beach at
Les Saintes-Maries-de-la-Mer
-Vincent van Gogh (1888)
Vincent van Gogh completed Fishing boats on the Beach at Les Saintes
Maries de la Mer (figure 19) in 1888, after spending time sketching on the shore of the Mediterranean fishing village.
It has a nearly even division of beach and sky. The boats are positioned in such a way that they break through this division created by beach and sky and unite them together. All used colors are controlled and individual objects are bound by black lines. 4
Chapter 1 –Visual Queries
We apprehend only a tiny amount of the information in our surroundings, but it is usually just the right information to carry us through the task of the moment. [1]
Visual thinking consists of a series of acts of attention, driving eye movement and tuning our patter-finding circuits. These acts of attention are called visual queries. [3]
The act of perception is determined by two kinds of processes: bottom-up and top-down. Driven by respectively the visual information in the pattern of light falling on the retina and driven by the demands of attention which in turn are determined by the needs of the tasks. [8]
Looking at figure 19 the queries could be:
- What is this painting about?
- What do these boats mean?
- Why are these boats on shore and the others at sea?
- Why did the painter paint these, other than because the look pretty.
Van Gogh was a true Impressionist, which means that he used an impression to paint. He wanted you to have the feeling of an impression. A glimpse. You don’t need to look at the painting for long to know what it’s about. Rough paint strokes indicate boats on the beach and boats at sea. Or wait, unique colorful boats without a sail are on the beach and the boats at sea have their sails out, but there unique colors blend in with the background and look the same, yellow and blue.
After having a better look you see the symmetry in the painting. Four boats on the beach, four at sea. The sky and land-sea division is also equal. The once impressionistically painting doesn’t seem to be that random anymore. Van Gogh carefully placed these boats on the canvas.
To find an answer to this query your eyes will search the painting via a series of eye-movements. But how do we decide where to move our eyes in a visual search task? How do we know where to look? And if we already know what is there, why do we need to look? [14]
A useful way of describing the way the brain operates to solve problems is as a set of nested loops. Outer loops with generalities. Inner loops process the details. [17]