Scientific Visualization. How Do Computers Make Images. Pictures are made up of pixels A pixel is a small box made up of all one color The smaller the pixels, the more easily the picture can be seen The more pixels you have the more memory the picture will take up.
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The computer finds the maximum and minimum values in the array (4 and 0)
The computer then splits the data in equal intervals between the max and min
After the intervals are created each one is assigned a certain color.
0 (DARK BLUE)
1 (LIGHT BLUE)
The Original Array
The Color Pallete
These are two different ways of viewing the same data
Advertise what data manipulation you have done, and be careful not to introduce artifacts into your data
This picture was taken in 1976 by cameras on a probe orbiting mars
Each pixel on the screen represents an area of 2304 square yards
This is a part of the array which shows the percentage of the vote Daley received in different parts of the city.
Using Programs like Scion Image, it is possible to view the raw data along with the image
This project was a huge undertaking of both the time required to plan it and the class time necessary to execute it. To justify the use of our most precious resource (time) we set several goals which we hoped to reach.
Measurements were taken by inserting a metal rod through a grid system built into a table.
The height from the table to the model was measured and entered into a spreadsheet.
These numbers represent the heights of a part of the model
In the final stage, students will be taught how to use imaging software to convert their actual data into a viewable images.
These images will then be analyzed. We will calibrate the image spatially, and then take measurements on both the
physical model and the computer image to determine error values.
The final discussion will involve several other examples of physical data used in computer imaging and modeling including topics from weather system animation to
This is a digital elevation model of the section of the model shown.
Gray scale wire