Consider the alphabet L and consider the matrix grid of 4X4.
Blacken the cells in the shape of L . Next write 1 in blackened cells and 0 in empty cells.
Write digit in the cells from left to right and top to bottom in a single line as a binary digits.
1000100010001111
Convert the binary number to ordinary number of base 10.
34959
Now the picture or letter L is digitized. Any picture can be digitized as given below.
Once we convert the picture into numbers, we get lot of advantages.
1. They can be instantly transmitted.
2. errors in the pictures can be detected and corrected.
3. requires less storage.
4. two pictures can be compared. For example, two signatures can be compared.
We have seen that by blackening the cells we can create drawings. We know that the spreadsheet is made up of cells. By colouring each cell suitably, we can create any colour picture, even your photo. By the way , the colours are also represented by binary digits.
Visit the site "make and do 4D.com" and create your photo in a spread sheet. Each time you click a selfie, you create a spread sheet of yourself. Each cell can be called pixel (picture element). If your phone has 1080X1920 pixels display, you understand what it is now and why it is called high definition-HD picture.
Blacken the cells in the shape of L . Next write 1 in blackened cells and 0 in empty cells.
Write digit in the cells from left to right and top to bottom in a single line as a binary digits.
1000100010001111
Convert the binary number to ordinary number of base 10.
34959
Now the picture or letter L is digitized. Any picture can be digitized as given below.
Once we convert the picture into numbers, we get lot of advantages.
1. They can be instantly transmitted.
2. errors in the pictures can be detected and corrected.
3. requires less storage.
4. two pictures can be compared. For example, two signatures can be compared.
We have seen that by blackening the cells we can create drawings. We know that the spreadsheet is made up of cells. By colouring each cell suitably, we can create any colour picture, even your photo. By the way , the colours are also represented by binary digits.
Visit the site "make and do 4D.com" and create your photo in a spread sheet. Each time you click a selfie, you create a spread sheet of yourself. Each cell can be called pixel (picture element). If your phone has 1080X1920 pixels display, you understand what it is now and why it is called high definition-HD picture.
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