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Fixed mismatch between coordinates indices (rather min/max values thereof)

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Martin Opat
2025-01-11 13:26:05 +01:00
parent 4971d693fd
commit b151e70167
3 changed files with 27 additions and 16 deletions
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24
src/linalg/mat.cu
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@@ -10,19 +10,27 @@ __device__ Vec3 computeGradient(float* volumeData, const int volW, const int vol
// Normal should point from higher to lower intensities
int xm = max(x - 1, 0);
int xp = min(x + 1, volW - 1);
int xp = min(x + 1, volH - 1);
int ym = max(y - 1, 0);
int yp = min(y + 1, volH - 1);
int yp = min(y + 1, volW - 1);
int zm = max(z - 1, 0);
int zp = min(z + 1, volD - 1);
// Note: Assuming data is linearized (idx = z*w*h + y*w + x) TODO: Unlinearize if data not linear
float gx = volumeData[z * volW * volH + y * volW + xp]
- volumeData[z * volW * volH + y * volW + xm];
float gy = volumeData[z * volW * volH + yp * volW + x ]
- volumeData[z * volW * volH + ym * volW + x ];
float gz = volumeData[zp * volW * volH + y * volW + x ]
- volumeData[zm * volW * volH + y * volW + x ];
// float gx = volumeData[z * volW * volH + y * volW + xp]
// - volumeData[z * volW * volH + y * volW + xm];
// float gy = volumeData[z * volW * volH + yp * volW + x ]
// - volumeData[z * volW * volH + ym * volW + x ];
// float gz = volumeData[zp * volW * volH + y * volW + x ]
// - volumeData[zm * volW * volH + y * volW + x ];
// Note: Assuming data is linearized (idx = z * W * H + x * W + y;) TODO: Unlinearize if data not linear
float gx = volumeData[z * volW * volH + x * volW + xp]
- volumeData[z * volW * volH + x * volW + xm];
float gy = volumeData[z * volW * volH + y * volW + yp]
- volumeData[z * volW * volH + y * volW + ym];
float gz = volumeData[zp * volW * volH + x * volW + y ]
- volumeData[zm * volW * volH + x * volW + y ];
return Vec3::init(gx, gy, gz);
};