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Top Forums Shell Programming and Scripting Script to solve second order (polynomial) interpolation Post 302759197 by Tzeronone on Monday 21st of January 2013 08:59:06 PM
Old 01-21-2013
Quote:
Originally Posted by Corona688
What do you mean by polynomial interpolation?

Polynomial interpolation is an interpolation that based on three value points (two previous points and next point). So, if we see the data, there are an ID 1, 4, and 8. So, we need to find out the value of 2, 3, 5, 6, and 7 based on value 1, 4, and 8. The formula is that
(((x-x2) * (x-x3)) / ((x1-x2) * (x1-x3))) * y1 + (((x-x1) * (x-x3)) / ((x2-x1) * (x2-x3))) * y2 + (((x-x1) * (x-x2)) / ((x3-x1) * (x3-x1))) * y3
x = current ID;
x1 = the first known ID (second previous known ID); ---> 1
x2 = the second known ID (first previous known ID); ---> 4
x3 = the third known ID (next known ID); ---> 8
y1 = the first known value (the value of ID x1)
y2 = the second known value (the value of ID x2)
y3 = the third known value (the value of ID x3)
 

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mlib_VideoInterpX_Y_XY_U8_U8(3MLIB)			    mediaLib Library Functions			       mlib_VideoInterpX_Y_XY_U8_U8(3MLIB)

NAME
mlib_VideoInterpX_Y_XY_U8_U8 - half-pixel interpolation in both X and Y directions for replenishment mode SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_VideoInterpX_Y_XY_U8_U8(mlib_u8 *outputX, mlib_u8 *outputY, mlib_u8 *outputXY, const mlib_u8 *image, mlib_s32 stride, mlib_s32 width, mlib_s32 height); DESCRIPTION
The mlib_VideoInterpX_Y_XY_U8_U8() function performs half-pixel interpolation in both X and Y directions for the replenishment mode. PARAMETERS
The function takes the following arguments: outputX Pointer to the output of X-interpolation. outputX must be 8-byte aligned. outputY Pointer to the output of Y-interpolation. outputY must be 8-byte aligned. outputXY Pointer to the output of XY-interpolation. outputXY must be 8-byte aligned. image Pointer to the image data. image must be 8-byte aligned stride Stride, in bytes, between adjacent rows in the image. stride must be a multiple of eight. width Width of the image. width must be a multiple of eight. height Height of the image. height must be a multiple of two. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_VideoInterpX_U8_U8(3MLIB), mlib_VideoInterpXY_U8_U8(3MLIB), mlib_VideoInterpY_U8_U8(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_VideoInterpX_Y_XY_U8_U8(3MLIB)
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