| apply_thr | Apply threshold | 
| azimuth_image | Build azimuth image | 
| calc_co | Calculate canopy openness | 
| calc_diameter | Calculate diameter | 
| calc_relative_radius | Calculate relative radius | 
| calc_zenith_colrow | Calculate zenith raster coordinates | 
| calibrate_lens | Calibrate lens | 
| chessboard | Do chessboard segmentation | 
| cie_sky_model_raster | CIE sky model raster | 
| colorfulness | Quantify colorfulness | 
| correct_vignetting | Correct vignetting effect | 
| crop_caim | Crop a canopy image from a file | 
| crosscalibrate_lens | Cross-calibrate lens | 
| defuzzify | Defuzzify a fuzzy classification | 
| enhance_caim | Enhance canopy image | 
| expand_noncircular | Expand non-circular | 
| extract_dn | Extract digital numbers | 
| extract_feature | Extract feature | 
| extract_radiometry | Extract radiometry data | 
| extract_rl | Extract relative luminance | 
| extract_sky_points | Extract sky points | 
| extract_sky_points_simple | Extract sky points | 
| extract_sun_coord | Extract sun coordinates | 
| find_sky_pixels | Find sky pixels | 
| find_sky_pixels_nonnull | Find sky pixels following the non-null criteria | 
| fisheye_to_equidistant | Fisheye to equidistant | 
| fisheye_to_pano | Fisheye to panoramic | 
| fit_cie_sky_model | Fit CIE sky model | 
| fit_coneshaped_model | Fit cone-shaped model | 
| fit_trend_surface | Fit a trend surface to sky digital numbers | 
| fix_reconstructed_sky | Fix reconstructed sky | 
| gbc | Gamma back correction | 
| interpolate_sky_points | Interpolate sky points | 
| lens | Access the lens database | 
| local_fuzzy_thresholding | Local fuzzy thresholding | 
| masking | Image masking | 
| mask_hs | Mask hemisphere | 
| mask_sunlit_canopy | Mask sunlit canopy | 
| membership_to_color | Compute the membership to a target color | 
| normalize | Normalize data | 
| obia | Do object-based image analysis of canopy photographs | 
| ootb_mblt | Out-of-the-box model-based local thresholding | 
| ootb_obia | Out-of-the-box object-based image analysis of canopy photographs | 
| ootb_sky_reconstruction | Out-of-the-box sky reconstruction | 
| optim_normalize | Optimize normalize parameters | 
| percentage_of_clipped_highlights | Percentage of clipped highlights | 
| polar_qtree | Do quad-tree segmentation in the polar space | 
| qtree | Do quad-tree segmentation | 
| read_bin | Read binarized images | 
| read_caim | Read a canopy image from a file | 
| read_caim_raw | Read a canopy image from a raw file | 
| read_manual_input | Read manual input | 
| read_opt_sky_coef | Read optimized sky coefficients | 
| regional_thresholding | Regional thresholding | 
| rings_segmentation | Do rings segmentation | 
| row_col_from_zenith_azimuth | Obtain row and col numbers from zenith and azimuth angles | 
| sectors_segmentation | Do sectors segmentation | 
| sky_grid_segmentation | Do sky grid segmentation | 
| test_lens_coef | Test lens projection functions | 
| thr_isodata | Calculate a threshold with the isodata method | 
| thr_mblt | Calculate thresholds with the model-based method | 
| write_bin | Write binarized images | 
| write_caim | Write canopy image | 
| write_sky_points | Write sky points | 
| write_sun_coord | Write sun coordinates | 
| zenith_azimuth_from_row_col | Obtain zenith and azimuth angles from row and col numbers | 
| zenith_image | Build Zenith image |