# Pixel Resolution and Number of Bits per Parameter
#### Pixel Resolution
The pixel resolution determines the warping accuracy. The final displacement of a reference point is the product of the warping parameter by parameter resolution. A warping parameter is therefore given by the desired displacement divided by resolution.
The resolution values supported by the warping library are: 0: 1/16 px, **1**: 1/8 px, **2**: 1/4 px, **3**: 1/2 px, **4**: 1 px, **5**: 2 px, **6**: 4 px, **7**: 8 px.
##### Example
**PixResolution: 0**
Factor for multiplying: 0.0625f
**PixResolution: 1**
Factor for multiplying: 0.125f
**PixResolution: 2**
Factor for multiplying: 0.25f
**PixResolution: 3**
Factor for multiplying: 0.5f
**PixResolution: 4**
Factor for multiplying: 1.0f
**PixResolution > 4**
WarpMatrix is no longer computed since delta calculation leads to "out of trapezoid limit" error
#### Number of Bits per Parameter
The configuration parameter "NumOfBitsPerParam" gives the allowed range for the warping parameter data. Therefore, each parameter is represented as a signed integer value of the given bit width.
If **n** is the number of bits, then the allowed range is: -(2n-1) .. + (2n-1- 1).
Maximum possible value for "NumOfBitsPerParam" is 16. Considering this, the maximum allowed range for the warping parameter data is: −32 768 .. 32 767.
The length of the parameter data is given by the following formula: 2 \* NumOfRefPointsX \* NumOfRefPointsY \* NumOfBitsPerParam / 8.
##### Example
- if "NumOfBitsPerParam" is 8, the warping parameter corresponding to point XnYn is represented as: 0xA0 0xA0
- if "NumOfBitsPerParam" is 12, the warping parameter corresponding to point XnYn is represented as: 0x0A 0x00 0xA0
