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Altera_Forum's avatar
Altera_Forum
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16 years ago

How to insert pixel values?

I am new in VHDL and i am currently working on my diploma thesis which is about hardware implementation of a neural network that does face detection using viola-jones algorithm.My question is that i ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

yes you could use a 2-dimensional array:

type PIXEL_TYPE is array (natural range 0 to 19) of std_logic_vector(19 downto 0);

signal pixel_array: PIXEL_TYPE;

You can access each pixel in that array with pixel_array(i)(j). You have to increment i with every pixel clock, j with every line.

Which hardware you are using? Sensor? FPGA? Devkit? May be it's better to store the pixel values in internal RAM. How does your algorithm work? Local in a small region or global (whole image)?

Jens