Loading...
Searching...
No Matches
◆ bilinearInterpolate()
| uint8_t fl::bilinearInterpolate | ( | uint8_t | v00, |
| uint8_t | v10, | ||
| uint8_t | v01, | ||
| uint8_t | v11, | ||
| uint16_t | dx, | ||
| uint16_t | dy ) |
Definition at line 67 of file bilinear_expansion.cpp.
68 {
69 uint16_t dx_inv = 256 - dx;
70 uint16_t dy_inv = 256 - dy;
71
72 uint32_t w00 = (uint32_t)dx_inv * dy_inv;
73 uint32_t w10 = (uint32_t)dx * dy_inv;
74 uint32_t w01 = (uint32_t)dx_inv * dy;
75 uint32_t w11 = (uint32_t)dx * dy;
76
77 uint32_t sum = v00 * w00 + v10 * w10 + v01 * w01 + v11 * w11;
78
79 // Normalize the result by dividing by 65536 (shift right by 16 bits),
80 // with rounding
81 uint8_t result = (uint8_t)((sum + 32768) >> 16);
82
83 return result;
84}
Referenced by bilinearExpandArbitrary().
Here is the caller graph for this function: