Matlab Program For Uniform Quantization Encoding Meaning

Description The Uniform Decoder block performs the inverse operation of the Uniform Encoder block, and reconstructs quantized floating-point values from encoded integer input. The block adheres to the definition for uniform decoding specified in ITU-T Recommendation G.701. Inputs can be real or complex values of the following six integer data types: uint8, uint16, uint32, int8, int16, or int32. The block first casts the integer input values to floating-point values, and then uniquely maps (decodes) them to one of 2 B uniformly spaced floating-point values in the range [-V, (1-2 1-B)V], where you specify B in the Bits parameter (as an integer between 2 and 32) and V is a floating-point value specified by the Peak parameter. The smallest input value representable by B bits (0 for an unsigned input data type; -2 B-1 for a signed input data type) is mapped to the value -V. The largest input value representable by B bits (2 B-1 for an unsigned input data type; 2 B-1-1 for a signed input data type) is mapped to the value (1-2 1-B)V.

Intermediate input values are linearly mapped to the intermediate values in the range [-V, (1-2 1-B)V]. To correctly decode values encoded by the Uniform Encoder block, the Bits and Peak parameters of the Uniform Decoder block should be set to the same values as the Bits and Peak parameters of the Uniform Encoder block. The Overflow mode parameter specifies the Uniform Decoder block's behavior when the integer input is outside the range representable by B bits. When you select Saturate, unsigned input values greater than 2 B-1 saturate at 2 B-1; signed input values greater than 2 B-1-1 or less than -2 B-1 saturate at those limits. The real and imaginary components of complex inputs saturate independently.

When you select Wrap, unsigned input values, u, greater than 2 B-1 are wrapped back into the range [0, 2 B-1] using mod-2 B arithmetic. Examples See example model. In this example, the input to the block is the uint8 output of a Uniform Encoder block. This block has comparable settings: Peak = 2, Bits = 3, and Output type = Unsigned. (Comparable settings ensure that inputs to the Uniform Decoder block do not saturate or wrap. See the example on the Uniform Encoder block reference page for more about these settings.) The real and complex components of each input are independently mapped to one of 2 3 distinct levels in the range [-2.0,1.5].

Matlab Program For Uniform Quantization Encoding Psychology International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research. Black Ops 2 God Mode Download Ps3 there. Then I wrote an simple code for it myself. Quantization Image using MATLAB. However what I want is uniform quantization.

Peak Specify the largest amplitude represented in the encoded input. To correctly decode values encoded with the Uniform Encoder block, set the Peak parameters in both blocks to the same value. Bits Specify the number of input bits, B, used to encode the data. (This can be less than the total number of bits supplied by the input data type.) To correctly decode values encoded with the Uniform Encoder block, set the Bits parameters in both blocks to the same value. Overflow mode Specify the block's behavior when the integer input is outside the range representable by B bits.