PhotoGlimmer User Guide

PhotoGlimmer is a free and open-source image editor distributed under the LGPL license. It is designed to enhance lighting on people or pets in photos with complex or stunning backgrounds, ensuring that the subjects look just as good as their surroundings.

Key Features


photoglimmer screenshot 0 photoglimmer screenshot 1 photoglimmer screenshot 1

Photoglimmer Screenshots. ♠ ♠ Image credits


Getting Started

  1. Click the Browse button or press Ctrl+O to open an image.
    1. The image opens in the editor. Any people or pets detected will appear as a grayscale segmentation mask in the left panel.
    2. Use the Threshold slider to adjust the automatic detection if necessary.
    3. 💡🖌 Adjust Brightness and Saturation sliders to enhance the selected area.
    4. Use Edge Blur to improve blending between the foreground and background.
    5. Toggle between editing Background and Foreground using the BG/FG switch at the top.
    6. Use BG Blur to blur the background for aesthetic effects.
    7. Adjust the Preserve slider to control the overall extent of changes applied.
  2. Click the Save button or press Ctrl+S to export your final image.
  3. To reset all changes at any time, click the button.
  4. Hold down the right mouse button over the image to temporarily view the original photo.

Enhancements

Working with Rectangles

Note: When rectangles are hidden, you cannot draw new ones. Press H to unhide them.

Keyboard Shortcuts

License

PhotoGlimmer is licensed under the LGPL (Lesser General Public License). You are free to use, modify, and distribute the software as per the terms of this license. You will need to credit the original developer and link back to the PhotoGlimmer project


Frequently Asked Questions (FAQ)

General FAQ:

Q: What is PhotoGlimmer?

A: PhotoGlimmer is an AI powered open-source image editing tool for enhancing the lighting and exposure of people or pets in photos — with a simple slider-based manual control on the process.

Q: Does PhotoGlimmer AI work offline ?

A: Yes, The program you install is fully self-contained and does not use any online connection

Q: What is the file size of PhotoGlimmer installer?

A: PhotoGlimmer installer is about 250 MBs in size. However, being a self-contained package, the install size is larger at about 900MBs

Q: Does PhotoGlimmer require a GPU ?

A: No, PhotoGlimmer is totally CPU. But you better have 4 GB RAM or above on your system

Q: How does PhotoGlimmer detect people or pets in an image?

A: PhotoGlimmer uses built-in AI to automatically detect people or pets in your photos. It shows a grayscale segmentation mask in the left panel as soon as the image is opened. You can further control the detection level.

Usage FAQ:

Q: What if the automatic detection is not accurate?

A: You can adjust the detection using the Threshold slider to grow or shrink the AI-generated mask. You can also draw rectangles to manually guide or override the detection.

Q: Can I manually choose which parts of the photo to enhance?

A: Absolutely! Just draw rectangular selections over the image using your mouse. This allows you to focus on specific people, pets, or even just body parts like faces or hands.

Q: 💡🖌 How do I adjust exposure or color?

A: Use the Brightness and Saturation sliders to fine-tune the look. For more advanced control, you can switch to curve-based adjustments via Tools > Preferences.

Q: What’s the “Edge Blur” slider for?

A: If increasing brightness creates a harsh edge between the enhanced area and the background, the Edge Blur slider helps smooth out the transition for a more natural look.

Q: Can I edit the background separately?

A: Yes! Use the BG/FG toggle at the top of the interface to switch between editing the background or the foreground.

Q: What do the "BG Blur" and "Preserve" sliders do?

BG Blur applies a soft blur to the background, helping your subject stand out. Preserve controls the overall intensity of changes applied to the image, keeping things subtle or dramatic — your call!

Q: How do I reset everything?

A: Just click the button to reset all edits and return to the original image.

Q: Can I quickly view the original image while editing?

A: Yes. Press and hold the right mouse button over the image to glimpse at the unedited version.

Q: What’s the deal with the rectangles?

Rectangles help you control where the AI focuses. You can draw multiple rectangles, move them, resize them using the edges (not corners), and delete them with the Del key. Press H to hide or show them. Just remember: you can’t add new ones while they’re hidden.

Q: Pressing H or DEL keys does not change rectangles!

A: Make the image area active by clicking somewhere on it. After this, the keys should work.

Q: I cannot draw the rectangles!

A: Might be because they are hidden. That disables drawing of new ones. Click on the image once and press the H key to make them visible again.

Q: I cannot resize the rectangles!

A: Might be because you are trying to reize useing corner handles. Try the handles (little boxes) at the midpoint of an edge.

Q: What does the “Denoise” button do?

A: It applies a subtle noise reduction filter to the final image. It can improve image quality, but may slow down performance quite a bit.

Q: What is Tooles>FG to clipboard? menu for?

A: Us it if you want to copy people in the foreground onto a more feature rich editor like GIMP . Copies the unedited version.

Q: Is PhotoGlimmer free to use?

A: Yes! PhotoGlimmer is free and open-source, licensed under the LGPL. Feel free to use, modify, and share it. Respect the license

Q: If the editor is open source, will the edited image also be in public domain?

A: No. The LGPL license conditions apply only to someone using this application's code to create a new application.

Curious Human FAQ:

Q: What's under the hood?

A: Mediapipe, Opencv , Pyside2 , Qt5.5 , and recently a good dose of help from Gemini, openAI and Perplexity

Q: Why such an old version of Mediapipe?

A: To keep the file size in check.

Q: Why are there so few comments in the code?

A: Because I have also cobbled together a decent comment remover for Python. It's here - NoCommentsPython 😈
Actually , the current code is quite a mess. All this started as a mere script. I plan to put all the comments back in after I have made the code modular proper.


Installation FAQ:

Q: How do I download installers for the latest version ?

A: Installers for the newest versions can be found near the top of Phogtoglimmer's github page

Q: Which installer to choose ?

A: Appimage for All linux flavours. .deb for perfect integration with Ubuntu, .msi for Windows

Q: How do I download installers for an older version ?

A: at this point there are not many older versions. But all installers can be found under Assets section for each release on Phogtoglimmer's Release page on github

Q: What if the installer does not work ?

A: That happens rarely. In that case run the installation from command line. Install whatever missing requirement it reports and you are all set.


The Epilogue

PhotoGlimmer is a photo editor with one objective- to make it easy for photography enthusiasts like me to highlight people in the foreground without requiring astronomical level of image editing skills; at the same time it should also give you the ability and satisfaction of manual editing. Standing in a mountain's shadow or enjoying a setting sun, we deserve to look just as good as the scenery behind us.

Here's a shot at doing that without using an advanced operation on a complex image editor. And having a lot more manual control than a phone app.

I hope you will find it as useful as I have, and have as much fun using it.

So go ahead. Brighten faces, blur backgrounds, and if things go wrong, there’s always the ⏮ button to start again.

psst! Somethimes, lowering the brightness and color values also works very well.



© Rahul Singh

Image credits: Flickr CC images [ joshua national park | skittledog | Newtown grafitti ] [Back to Screenshots ]