A work in progress.
This is are some sketch ideas of a video explanation I am preparing for a video.
It is going to be first on spanish so some lost in translation may occur.
This is going to be a long read, so you might wait for the video relase n_n
Chapter one: Introduction.
In life we deed to measure things, and we use diferent units to measure them. Meters for measuring a house, liters to measure a limonade we should prepare and hours to measure how long women take to get ready.
There are other kind of units that are not simple like the previous ones, but they are a relationship.
Foe example one of the most offen used is speed, veloctiy.
Speed tell us how much distance we travel in some amount of time.
We can have a car that travels 100 km in two hours, but we simplify the result on how much travels in one hour. Then we have that the speed is 50 km each hour. 50 km/h.
It is important to note that the definition is not a multiplication (50km x h) but a division 50km / hr.
Speed then is "The amount of distance traveled in one period of time".
Resolution is the same, it is a relation.
Chapter 2: A definition
My definition is:
"The amount of information units content in each dimensional unit".
We have then, four parts: Amount + Units of information + each + dimensional unit.
This definition adapts itself to diferent situations, for example, we could be used to use the term in images, but the term is also used in sound files for example.
We can record the voice of a person, the vibration in a mic can be recorded a lot of times per second, or less times, recording less information. We can have then a high resolution recording or a low resolution recording.
Chapter 3: A dot.
Imagine we use shugar to draw a cat on a table. We could count how many grains of sugar we have in each linear inch.
But if we use fluor to draw the same cat of the same size, we can imagine we have a lot more of grains than the sugar, on the same linear inch.
On the contrary, if we use rice, the definitio will get worse.
This is a first unit we need to understand. A grain represents one Dot, and this relationship is the first we need to understand: how many dots we have in one inch. Dots per inch or dpi.
But we need to understand the characteristic of this "dot". Either we have one grain of sugar or we don't. The information a grain of shugar is: "I am there or I am not there". There are no "gohstly" grains of shugar, that are "almost" there and almost disapear... unless someone sneezes on our image.
The information a single dot can carry is binary. This is: either you have a dot or you do not have a dot. Of course you can put two or more dots to have more meanings, but i am refering to a single dot.
But using shugar to make drawings is a bit complicated, so normally we use ink.
Chapter 4: A pixel
Chapter 5: A line
(To be continued...)
Some other chapters are like the dot, the pixel, the line, halftone, stochastic (error difussion), distances, electronic mediums, projected images, camera, screen, eye function, CSS pixels, etc, even images viewed form space n_n.
Some to explain the concept and some to explain an aplicated case.
Some misconceptions are due the bad usage of the units. For example a box of cereal should have some amount of cereal measured in weight. And boxes says so, that the content height may vary for the manipulation of the boxes.
If an elephant steps on your box of cereal it still weight the same (after removing the elephant of course) but the level of the box will be now diferent.
(There will be a chapter mentioning the elephant of course)
What are we talking about?
Units and perception.
There is an old Indian story about 7 blind man that are exploring what is an elephant.
One concludes that an elephant is a big tree, because he hugs a leg, another concludes he is a snake because he touches the elephant's trunk, and so the other 5 men "decides" their own conclution.
Although the moral of the story is a little diferent there (to percive the elephant as a whole) The point it is needed to explain is "What units are we talking about?
And also, I will talk about how information is transfered, or translated, or aplied, or modified across a system, and how this "resolution units" then change and mix.