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0001 .. meta::
0002    :description: digiKam Image Editor Workflow Tools
0003    :keywords: digiKam, documentation, user manual, photo management, open source, free, learn, easy, image, editor, workflow, tools, color, enhance, transform, effects, decorate
0004 
0005 .. metadata-placeholder
0006 
0007    :authors: - digiKam Team
0008 
0009    :license: see Credits and License page for details (https://docs.digikam.org/en/credits_license.html)
0010 
0011 .. _workflow_tools:
0012 
0013 Workflow Tools
0014 ==============
0015 
0016 .. contents::
0017 
0018 .. _standard_workflow:
0019 
0020 A Standard Workflow Proposal
0021 ----------------------------
0022 
0023 When performing a basic workflow, the primary areas for consideration are:
0024 
0025     1. Exposure: :ref:`White Balance <color_wb>`.
0026 
0027     2. Color: :ref:`White Balance <color_wb>`.
0028 
0029     3. Black and white points: :ref:`White Balance <color_wb>` or :ref:`Adjust Levels <color_levels>`.
0030 
0031     4. Contrast: :ref:`Adjust Curves <color_levels>`.
0032 
0033     5. Saturation: :ref:`White Balance <color_wb>`, :ref:`Vivid <effects_color>` or :ref:`Hue/Saturation/Lightness <color_hsl>`.
0034 
0035     6. Resizing (interpolation): :ref:`Change Size <transform_resize>`.
0036 
0037     7. :ref:`Sharpening <enhance_sharpen>`.
0038 
0039     8. :ref:`Digital Asset Management <organize_find>` (applying tags, captions, rating, geolocation, save under new name).
0040 
0041 We recommend this sequence of image editing steps to ensure optimum photographic quality for the end product. In particular, never do sharpening before the last step. And we recommend using a lossless format like PNG or TIFF for storing photographs. Otherwise you'll lose a bit every time you save the results. If you can afford it, use 16 bit/channel for your best shots. If you want to change color space, in particular if you want to work in CIEL*a*b, 16 bit per channel are required to avoid truncation effects.
0042 
0043 If you swap step 4. and 5., which is well possible if the initial contrast is already very good, you can do the first 4. adjustment in the same tool, the **White Balance**.
0044 
0045 Many of the tools you may need for photographic editing are included with digiKam. Their description follows here.
0046 
0047 Common Editing Tools Features
0048 -----------------------------
0049 
0050 All Image Editor tools like Sharpen, Blur, Noise Reduction, Refocus, Unsharp Mask, etc. use a common dialog style that previews the effect before applying the filter to the current image. Below you see the **Solarize** tool in action using this common dialog layout:
0051 
0052 .. figure:: images/editor_commondialogtools.webp
0053     :alt:
0054     :align: center
0055 
0056     The Solarize Effect is a Common Tool to Edit Photograph
0057 
0058 See the list of common areas available in all tools:
0059 
0060     - (1): The seven buttons to the top left select the comparison style of the preview area. The modes are:
0061 
0062         - **Original** image.
0063 
0064         - **Split vertically without duplication**: The left area shows the original whereas the right side shows the filter applied to the continuation of the selected zoom.
0065 
0066         - **Split horizontally without duplication**: The top area shows the original whereas the lower area shows the filter applied to the continuation of the selected zoom.
0067 
0068         - **Split vertically**: The left area shows the original and the right one the filter effect for comparison.
0069 
0070         - **Split horizontally**: The top area shows the original and the lower one the filter effect for comparison.
0071 
0072         - **Effect preview**: This is a live effect preview without comparison.
0073 
0074         - **Mouse over** style: preview when mouse is off the preview (in the settings area), otherwise shows original.
0075 
0076     - (2): There are two buttons that can be toggled to show **over-exposure** or **under-exposure**. The colors can be customized in the :ref:`Editor Window Settings <editor_settings>` from Setup dialog.
0077 
0078     - (3): The **preview** area. Click and drag with the mouse to move it on the image. The preview area on the left of dialog is updated accordingly.
0079 
0080     - (4): The filter or tool **settings** area.
0081 
0082     - (5): The **zoom** slider and buttons to change the canvas and preview zoom level.
0083 
0084     - (6): There is a **progress indicator** for tool with involved calculations at processing stage, else the current **file-name** is displayed.
0085 
0086 The Image Editor tools are available as plugins loaded dynamically at startup and configurable in :ref:`Setup dialog <plugins_settings>`. List of tools is given below:
0087 
0088     - Image Color Corrections:
0089 
0090         - :ref:`Encoding Depth <color_depth>`
0091 
0092         - :ref:`Color-Space Converter <color_cm>`
0093 
0094         - :ref:`Auto Correction <color_auto>`
0095 
0096         - :ref:`Brightness / Contrast / Gamma <color_bcg>`
0097 
0098         - :ref:`Hue / Saturation / Lightness <color_hsl>`
0099 
0100         - :ref:`Colors Balance <color_balance>`
0101 
0102         - :ref:`Adjust Levels <color_levels>`
0103 
0104         - :ref:`White Balance <color_wb>`
0105 
0106         - :ref:`Curves Adjust <color_curves>`
0107 
0108         - :ref:`Channels Mixer <color_mixer>`
0109 
0110         - :ref:`Black and White <color_bw>`
0111 
0112         - :ref:`Simulate Infrared Film <color_infrared>`
0113 
0114         - :ref:`Simulate Negative Film <color_negative>`
0115 
0116         - :ref:`Invert Colors <color_invert>`
0117 
0118     - Image Enhancement:
0119 
0120         - :ref:`Sharpening (sharpen, unsharp mask, refocus) <enhance_sharpen>`
0121 
0122         - :ref:`Blur Tool <enhance_blur>`
0123 
0124         - :ref:`Red Eyes Removal <enhance_redeyes>`
0125 
0126         - :ref:`Local Contrast <enhance_localcontrast>`
0127 
0128         - :ref:`Noise Reduction <enhance_nr>`
0129 
0130         - :ref:`Hot Pixel Correction <enhance_hotpixels>`
0131 
0132         - :ref:`Lens Distortion Correction <enhance_lensdistortion>`
0133 
0134         - :ref:`Photograph Restoration <enhance_restoration>`
0135 
0136         - :ref:`Vignetting Correction Tool <enhance_vignetting>`
0137 
0138         - :ref:`Lens Auto-Correction Tool <enhance_lensauto>`
0139 
0140         - :ref:`Healing Clone Tool <enhance_clone>`
0141 
0142     - Image Transformation Tools:
0143 
0144         - :ref:`Crop Tool <transform_crop>`
0145 
0146         - :ref:`Change Size <transform_resize>`
0147 
0148         - :ref:`Liquid Rescale <transform_liquidrescale>`
0149 
0150         - :ref:`Free Rotation <transform_freerotation>`
0151 
0152         - :ref:`Perspective Adjustment <transform_perspective>`
0153 
0154         - :ref:`Shearing Tool <transform_shear>`
0155 
0156     - Image Decoration Tools:
0157 
0158         - :ref:`Add Border <decorate_border>`
0159 
0160         - :ref:`Insert Text <decorate_inserttext>`
0161 
0162         - :ref:`Apply Texture <decorate_texture>`
0163 
0164     - Special Effect Filters:
0165 
0166         - :ref:`Color Effects <effects_color>`
0167 
0168         - :ref:`Add Film Grain <effects_filmgrain>`
0169 
0170         - :ref:`Simulate Oil Painting <effects_oilpaint>`
0171 
0172         - :ref:`Simulate Charcoal Drawing <effects_charcoal>`
0173 
0174         - :ref:`Emboss Photograph <effects_emboss>`
0175 
0176         - :ref:`Distortion FX <effects_distortion>`
0177 
0178         - :ref:`Blur FX <effects_blur>`
0179 
0180         - :ref:`Add Rain Drops <effects_raindrops>`
0181 
0182 .. note::
0183 
0184     All these tools are also available into the **Tools** tab from the Image Editor right sidebar.
0185 
0186     .. figure:: images/editor_tools_sidebar.webp
0187         :alt:
0188         :align: center
0189 
0190         The digiKam Image Editor Tools Tab from the Right Sidebar
0191 
0192 .. _rawprocessing_workflow:
0193 
0194 Raw Workflow
0195 ------------
0196 
0197 A typical RAW workflow with digiKam may follow these steps:
0198 
0199     - Setting up the RAW conversion and color management preferences:
0200 
0201         - Get the ICC color profiles for the camera, display and printer.
0202 
0203         - Setup digiKam correctly defining a color work space.
0204 
0205     - Camera whitepoint setting.
0206 
0207     - Demosaicing (includes interpolation, noise filtering and chromatic aberration correction).
0208 
0209     - Conversion to a color space.
0210 
0211     - Gamma correction, tone mapping.
0212 
0213     - Color profile assignment.
0214 
0215     - Dynamic range expansion (optional).
0216 
0217     - Continue with :ref:`standard workflow <standard_workflow>`.
0218 
0219 From there everything is simple, select a RAW image and open it in the editor. The Raw Import tool will be displayed after the image has been processed in order to adjust color rendering. Without color management all images are very dark, this is normal. You can experiment the various profiles you have in order to select the best input profile according to your image (some tends to be very neutral, even a bit dull, some gives more saturated results, etc.).
0220 
0221 .. figure:: images/editor_rawimport.webp
0222     :alt:
0223     :align: center
0224 
0225     The RAW Import Tool Allow to Load Digital Negative in Image Editor