| 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 |