Some ways in which I think computer vision differs from human vision are through how quickly we are able to understand what we see. When I look at an image, I can usually understand or identify what I am looking at almost immediately. I can recognize a person, understand their actions, and interpret the situation without consciously thinking about individual pixels. However, computers don’t naturally understand the meaning of an image. Computers have to analyze information such as changes in pixels, brightness, color, and movement. I found this interesting because it shows that computers do not actually “see” in the same way that humans do. Human vision allows us to interpret not only what is physically present in an image, but also the meaning and context behind it, whereas computer vision depends on how we teach the computer to interpret the visual information it receives.
To help a computer see and track what we are interested in, we need to give it specific information that it can identify. The reading discusses techniques such as frame differencing, background subtraction, and brightness thresholding, which allow a computer to detect things like movement or objects that stand out from their surroundings. Improving computer vision is not always about making the software more complicated. We can also change the physical environment for the computer so that the things we want to track becomes easy for the computer to detect. This made me think about computer vision as a combination of programming and design, where we are not only telling the computer what to look for but also creating the right conditions for it to find it.
Moreover, I think computer vision’s ability to track people creates both interesting possibilities and concerns for interactive art. Tracking allows an artwork to respond to a person’s movements and makes the experience feel more personal and interactive. At the same time, I think there is a clear difference between someone choosing to interact with an artwork and being tracked without fully realizing it. The reading’s discussion of surveillance made me think about how the same technology that makes an artwork interactive can also make people feel observed. Because of this, I think artists need to think carefully about how they use tracking and whether participants understand what the system is observing.