Question

answer true or false and why?

1- for an image bit stream of 256*256*3 a compression ratio of 8/3 is required

2-image conversion transformation and quantization are the way for compression

3-G.11 recommendation sampling rate is 8000 sample per second results of 64000 bit per second

4- video transformation is the key of video compression

5-There are spatial resolution and luminance resolution

6-encoding of audio signals results of 1.411Mbs

Answer 1

Solution 1: It is false, as the compression ratio is a ratio of the uncompressed size of an image to the compressed size of that image and it has nothing to do with the bitstream for an image.

Solution 2: It is true as both the image transformation as well as the image quantization techniques are nothing but different ways of compressing an image so that they can be processed efficiently.

Solution 3: It is true as each sample is 8 bit in size and hence the 8 X 8000 samples is equal to 64000 bits/second as the sampling rate.

Solution 4: It is true as the wavelet transformations are widely used in the field of video processing to compress the video.

Solution 5: Although the question is not clear as it is not framed properly as what has been asked but still, the answer to this question somewhere lies in the fact that there is no term as luminance resolution.

Solution 6: It is true as the encoding of the audio signals results in a compressed file of 1.411 Mbs.

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