diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/detector.c | 51 | ||||
| -rw-r--r-- | src/image.h | 4 | ||||
| -rw-r--r-- | src/utils.c | 2 | ||||
| -rw-r--r-- | src/utils.h | 2 |
4 files changed, 28 insertions, 31 deletions
diff --git a/src/detector.c b/src/detector.c index 52f24b1e..fd84a9c5 100644 --- a/src/detector.c +++ b/src/detector.c @@ -37,56 +37,56 @@ /* Bleed excess intensity into neighbouring pixels */ -static void bloom_values(double *tmp, int x, int y, - int width, int height, double val) +static void bloom_values(int *tmp, int x, int y, + int width, int height, int val) { - double overflow; + int overflow; overflow = val - SATURATION; /* Intensity which bleeds off the edge of the detector is lost */ if ( x > 0 ) { - tmp[x-1 + width*y] += overflow / 6.0; + tmp[x-1 + width*y] += overflow / 6; if ( y > 0 ) { - tmp[x-1 + width*(y-1)] += overflow / 12.0; + tmp[x-1 + width*(y-1)] += overflow / 12; } if ( y < height-1 ) { - tmp[x-1 + width*(y+1)] += overflow / 12.0; + tmp[x-1 + width*(y+1)] += overflow / 12; } } if ( x < width-1 ) { - tmp[x+1 + width*y] += overflow / 6.0; + tmp[x+1 + width*y] += overflow / 6; if ( y > 0 ) { - tmp[x+1 + width*(y-1)] += overflow / 12.0; + tmp[x+1 + width*(y-1)] += overflow / 12; } if ( y < height-1 ) { - tmp[x+1 + width*(y+1)] += overflow / 12.0; + tmp[x+1 + width*(y+1)] += overflow / 12; } } if ( y > 0 ) { - tmp[x + width*(y-1)] += overflow / 6.0; + tmp[x + width*(y-1)] += overflow / 6; } if ( y < height-1 ) { - tmp[x + width*(y+1)] += overflow / 6.0; + tmp[x + width*(y+1)] += overflow / 6; } } -static uint16_t *bloom(double *hdr_in, int width, int height) +static uint16_t *bloom(int *hdr_in, int width, int height) { int x, y; uint16_t *data; - double *tmp; - double *hdr; + int *tmp; + int *hdr; int did_something; data = malloc(width * height * sizeof(uint16_t)); - tmp = malloc(width * height * sizeof(double)); - hdr = malloc(width * height * sizeof(double)); + tmp = malloc(width * height * sizeof(int)); + hdr = malloc(width * height * sizeof(int)); - memcpy(hdr, hdr_in, width*height*sizeof(double)); + memcpy(hdr, hdr_in, width*height*sizeof(int)); /* Apply DQE (once only) */ for ( x=0; x<width; x++ ) { @@ -97,13 +97,13 @@ static uint16_t *bloom(double *hdr_in, int width, int height) do { - memset(tmp, 0, width*height*sizeof(double)); + memset(tmp, 0, width*height*sizeof(int)); did_something = 0; for ( x=0; x<width; x++ ) { for ( y=0; y<height; y++ ) { - double hdval; + int hdval; hdval = hdr[x + width*y]; @@ -122,7 +122,7 @@ static uint16_t *bloom(double *hdr_in, int width, int height) /* Prepare new input if we're going round for another pass */ if ( did_something ) { - memcpy(hdr, tmp, width*height*sizeof(double)); + memcpy(hdr, tmp, width*height*sizeof(int)); } } while ( did_something ); @@ -169,7 +169,8 @@ void record_image(struct image *image) for ( x=0; x<image->width; x++ ) { for ( y=0; y<image->height; y++ ) { - double counts, intensity, sa, water; + int counts; + double intensity, sa, water; double complex val; double dsq, proj_area; @@ -181,7 +182,6 @@ void record_image(struct image *image) image->xray_energy, BEAM_RADIUS, WATER_RADIUS); - //printf("%e, %e, ", intensity, water); intensity += water; /* Area of pixel as seen from crystal (approximate) */ @@ -194,10 +194,7 @@ void record_image(struct image *image) /* Projected area of pixel divided by distance squared */ sa = proj_area / (dsq + Lsq); - counts = intensity * ph_per_e * sa; - //printf("%e counts\n", counts); - - counts = poisson_noise(counts); + counts = poisson_noise(intensity * ph_per_e * sa * DQE); image->hdr[x + image->width*y] = counts; @@ -212,7 +209,7 @@ void record_image(struct image *image) * sizeof(uint16_t)); for ( x=0; x<image->width; x++ ) { for ( y=0; y<image->height; y++ ) { - double val; + int val; val = image->hdr[x + image->width*y]; if ( val > SATURATION ) val = SATURATION; image->data[x + image->width*y] = (uint16_t)val; diff --git a/src/image.h b/src/image.h index e9db7cad..a7c6c355 100644 --- a/src/image.h +++ b/src/image.h @@ -62,8 +62,8 @@ struct threevec /* Structure describing an image */ struct image { - double *hdr; /* Actual counts */ - uint16_t *data; /* Integer counts after DQE/bloom */ + int *hdr; /* Actual counts */ + uint16_t *data; /* Integer counts after bloom */ double complex *sfacs; struct threevec *qvecs; double *twotheta; diff --git a/src/utils.c b/src/utils.c index 9aa235a2..36ae533e 100644 --- a/src/utils.c +++ b/src/utils.c @@ -74,7 +74,7 @@ void progress_bar(int val, int total, const char *text) } -double poisson_noise(double expected) +int poisson_noise(double expected) { double L; int k = 0; diff --git a/src/utils.h b/src/utils.h index bb0dd77e..31ecdf7b 100644 --- a/src/utils.h +++ b/src/utils.h @@ -69,7 +69,7 @@ extern double angle_between(double x1, double y1, double z1, extern size_t skipspace(const char *s); extern void chomp(char *s); extern void progress_bar(int val, int total, const char *text); -extern double poisson_noise(double expected); +extern int poisson_noise(double expected); /* Keep these ones inline, to avoid function call overhead */ static inline struct quaternion invalid_quaternion(void) |