151 struct _Image  struct
154     storage_class;
157     colorspace;         /* colorspace of image data */
160     compression;        /* compression of image when read/write */
163     quality;            /* compression quality setting, meaning varies */
166     orientation;        /* photo orientation of image */
169     taint;              /* has image been modified since reading */
172     columns,            /* physical size of image */
173     rows,
174     depth,              /* depth of image on read/write */
175     colors;             /* Size of color table, or actual color count */
179     *colormap,
180     alpha_color,        /* deprecated */
181     background_color,   /* current background color attribute */
182     border_color,       /* current bordercolor attribute */
183     transparent_color;  /* color for 'transparent' color index in GIF */
186     gamma;
189     chromaticity;
192     rendering_intent;
195     *profiles;
198     units;          /* resolution/density  ppi or ppc */
201     *montage,
202     *directory,
203     *geometry;
206     offset;         /* ??? */
209     resolution;     /* image resolution/density */
212     page,           /* virtual canvas size and offset of image */
213     extract_info;
216     fuzz;           /* current color fuzz attribute - move to image_info */
219     filter;         /* resize/distort filter to apply */
222     intensity;      /* method to generate an intensity value from a pixel */
225     interlace;
228     endian;         /* raw data integer ordering on read/write */
231     gravity;        /* Gravity attribute for positioning in image */
234     compose;        /* alpha composition method for layered images */
237     dispose;        /* GIF animation disposal method */
240     scene,          /* index of image in multi-image file */
241     delay,          /* Animation delay time */
242     duration;       /* Total animation duration sum(delay*iterations) */
245     ticks_per_second;  /* units for delay time, default 100 for GIF */
248     iterations,        /* number of interations for GIF animations */
249     total_colors;
252     start_loop;        /* ??? */
255     interpolate;       /* Interpolation of color for between pixel lookups */
258     black_point_compensation;
261     tile_offset;
264     type;
267     dither;            /* dithering on/off */
270     extent;            /* Size of image read from disk */
273     ping;              /* no image data read, just attributes */
276     read_mask,
277     write_mask;
280     alpha_trait;       /* is transparency channel defined and active */
283     number_channels,
284     number_meta_channels,
285     metacontent_extent;
288     channel_mask;
291     *channel_map;
294     *cache;
297     error;
300     timer;
303     progress_monitor;
306     *client_data;
309     *ascii85;
312     *generic_profile;
315     *properties,       /* general settings, to save with image */
316     *artifacts;        /* general operational/coder settings, not saved */
342   struct _ImageInfo  argument
348   struct _Image  argument
349     *list,             /* Undo/Redo image processing list (for display) */
350     *previous,         /* Image list links */
351     *next;
375 struct _ImageInfo  argument