| .TH IM_RAD2FLOAT 3 "25 March 2009" |
| .SH NAME |
| im_rad2float, im_float2rad \- convert RAD coded images to float and back |
| .SH SYNOPSIS |
| #include <vips/vips.h> |
| |
| int im_rad2float( IMAGE *in, IMAGE *out ) |
| |
| int im_float2rad( IMAGE *in, IMAGE *out ) |
| |
| .SH DESCRIPTION |
| These functions convert |
| .B IM_CODING_RAD |
| images to 3-band float and back. |
| |
| .B im_rad2float(3) |
| unpacks a 4-band uchar image in |
| .B IM_CODING_RAD |
| format to 3-band float. RAD images are used by the |
| .B radiance(1) |
| family of programs for HDR imaging. |
| |
| Some VIPS operations will work directly on the packed RAD images (such as |
| .B im_extract_area(3) |
| ) but many will require the image to be unpacked to 3-band float for |
| processing. |
| |
| .B im_float2rad(3) |
| packs a 3-band float image back to 4-band uchar in |
| .B IM_CODING_RAD |
| format. |
| |
| .SH RETURN VALUE |
| The functions return 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_LabQ2Lab(3), im_format(3). |
| .SH AUTHOR |
| J. Cupitt \- 23 March 2009 |
