What You See is Not Always What You Get

For this week, we took a break from writing and attempted to demonstrate the effect of certain cues in perception. We hope that you’ll enjoy! 🙂

1. Shadows


Mark and his gloomy shadow :>

Mark seems a bit emo here, leaning on a wall, probably thinking of someone. But wait, how do we know there’s a wall when all we see is a white background? That’s right. It’s because of the shadows casted which made it obvious that a wall is indeed behind him! Without visual cues such as shadows, it would be very hard for us to predict an object’s position in relation to the environment.

2. Occlusion

The following pictures uses the pictorial cue occlusion. :>


Mark, why are you hiding? 🙂

In this picture, we see Racqs and Mark in a hallway. Can you guess who’s farther away? Although they somehow look the same height in this picture, you can probably predict that Racqs is nearer than Mark. This is because of the concept of occlusion, such that Racqs partially hides Mark, hinting that Racqs is nearer than Mark. In occlusion, you can’t say the absolute distance, but the relative distance of objects (or persons in this example!) can be deduced.


Mark! Is that you?

Is Mark becoming more studious? This picture is another example of occlusion in which the book is partially hiding Mark from view.

3. Texture Gradient and Perspective Convergence


Did the sidewalk became shorter?

What a beautiful pavement around the Sunken Garden! But if it’s a straight pavement, how come it seems to meet at the ends?! This concept that makes the pavement look like it’s going nowhere is called perspective convergence wherein – you guessed it – parallel lines extend out  making them closer and closer as distance increases. Also, note the beautiful patterns on the pavement itself. Did you notice that as you get farther, the crisscrossing pattern seem to be more jam packed as compared to the ones nearer? This next concept now is called texture gradient where elements that are equally spaced in a scene appear to be more closely packed as distance increases.

4. Relative Size


Who is taller? 🙂

In here, two people (Mark and Racqs!) of the same height are perceived differently. Is is true that Mark is really a dwarf compared to giant Racqs?! This concept of Mark dwarfing as he gets farther and Racqs getting some muscle and pounds is called relative size. This concept states that the one that is farther away will be seen as smaller as compared to the one that is nearer in view, even if, in fact, they are of the same size.

5. Relative Height

The next two pictures demonstrate relative height wherein the first picture, the one looking straight ahead, indicates greater depth as compared to the second picture, the one looking down, which suggests lesser height and depth.


Looking straight ahead —


Looking down…

6. Familiar size


Oh no!~ A giant hand is picking up Racqs! 😮

Woah! Is that God’s hand picking up Racqs?! Well, nope! That’s just Mark’s hand trying to pinch Racqs’ cheeks! But since we’re in a Perception class, we might explain this cool illusion. This concept (or trick if you want to call it that!) is known as familiar size. Based on our previous knowledge, we know that a person is definitely bigger than a hand. However, we can see in this image that the hand is bigger than the person. This illustrates another play on visual cues depicting that objects nearer will appear bigger while those farther will appear smaller.

7. Atmospheric perspective



What a beautiful skyline. The UP Sunken Garden could not look anymore beautiful. But you might ask, why is it that the ones on the horizon seem far, while a branch of the tree looks so near? What’s that nagging feeling you have that if only there’s something that’s missing, you would not have guessed that the grandstand in the back is indeed far? If you’re taking 135 this sem, then you know the answer: it’s because the background is a bit blue and blurred, whereas the trees near are clear, characteristic of scenes that are far and near. This is called atmospheric perspective: the nearest objects seem to have more defined shape and a sharper image as compared to the ones in the background.

8. Perspective Convergence


Another one for perspective convergence!

Here is another example of perspective convergence. In this picture, it appears that the sides of the road in front of the Main Lib converge as it gets farther.

That’s it! Hope you had fun viewing our pictures as much as we did in making them! 🙂

– TMT (Janine, Erika, Racqs, Mark)


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