题目内容
______ are the means by which information is conveyed.
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Each pixel has two attributes at least: ______ and gray-level value.
A digital image has 100×100 pixels, and its gray scale is [0 255]. The data quantity after Huffman encoding is 20000 bits, then the compression ratio is ( ) .
The mask [-2,-1,0; -1,0,1; 0,1,2] can be used to detect the ( ) edge.
( ) can blur the image or remove the noise in the image.
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