Lines Matching defs:Iy
69 /*Compute derivatives Ix,Iy for a subrow of img with upper left (i,j) and width chunk_width
71 inline void db_IxIyRow_f(float *Ix,float *Iy,const float * const *img,int i,int j,int chunk_width)
78 Iy[c]=img[i-1][j+c]-img[i+1][j+c];
82 /*Compute derivatives Ix,Iy for a subrow of img with upper left (i,j) and width 128
202 int Ix,Iy;
207 Iy=(img[i-1][j+c]-img[i+1][j+c])>>1;
209 dxx[c+128]=Ix*Iy;
210 dxx[c+256]=Iy*Iy;
621 float *Ix[5],*Iy[5];
633 Iy[i]=Ix[i]+chunk_width_p4;
637 for(i=top-2;i<top+2;i++) db_IxIyRow_f(Ix[i%5],Iy[i%5],img,i,left-2,chunk_width_p4);
643 db_IxIyRow_f(Ix[(i+2)%5],Iy[(i+2)%5],img,(i+2),left-2,chunk_width_p4);
648 Iy[(i-2)%5],Iy[(i-1)%5],Iy[i%5],Iy[(i+1)%5],Iy[(i+2)%5]);
