About Rock Art Enhancer
This app uses advanced techniques to enhance the colours in rock art to make faint drawings and stencils more visible. Techniques used include decorrelation stretching, histogram equalization, saturation enhancement, and...
This app uses advanced techniques to enhance the colours in rock art to make faint drawings and stencils more visible. Techniques used include decorrelation stretching, histogram equalization, saturation enhancement, and hue/brightness matching. It works on photos from your phone's gallery and also has a live video enhancement mode. Enhanced photos can be saved for later viewing and sharing.
The live enhancement mode lets you hold your phone over a possible site of rock art and enhances the colours in real time to help you see what's there. In this mode, you can short press the screen to cycle between the different enhancement techniques, or long press to toggle the flash on/off to make it easier to view art in dark rock shelters.
The auto photo enhancement mode lets you choose a photo from your phone's gallery and carries out the same enhancements as available in the live mode. Short pressing the image opens it in your phone's photo viewing app.
The manual photo enhancement mode lets you choose a photo from your phone's gallery and has a drop down to choose the hue you want to enhance (e.g. red). This sets the default positions for the hue and value sliders (in HSV colour space). When you press the apply button, the pixels in the image matching the slider ranges are changed to the selected colour. To revert the image, choose a match colour of "None". Short pressing the image opens it in your phone's photo viewing app. Long pressing on the image will bring up a pixel chooser which lets you select a custom hue for colour matching.
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Previous Versions
Here you can find the changelog of Rock Art Enhancer since it was posted on our website on 2019-07-30 14:33:43.
The latest version is 2.9 and it was updated on 2024-04-22 14:25:35. See below the changes in each version.
Rock Art Enhancer version 2.8
Updated At: 2023-08-06
Changes: 2.8: Added check box on main photo enhancement page to toggle on/off enhancement.
2.7: Added button to take photo from app. Allow photo rotation of 0, 90, 180, or 270 degrees.
2.6: Added an option to save photos to your phone's gallery, instead of to the app's private data storage. Significantly improved performance of YUV and Lab Custom modes.
2.5: Added "D.Stretch Lab Custom" enhancement mode.
2.4: Updated to target Android SDK 31
Rock Art Enhancer version 2.9
Updated At: 2023-08-06
Changes: 2.9: Updated to target Android SDK 33.
2.8: Added check box on main photo enhancement page to toggle on/off enhancement.
2.7: Added button to take photo from app. Allow photo rotation of 0, 90, 180, or 270 degrees.
2.6: Added an option to save photos to your phone's gallery, instead of to the app's private data storage. Significantly improved performance of YUV and Lab Custom modes.
2.5: Added "D.Stretch Lab Custom" enhancement mode.
2.4: Updated to target Android SDK 31
Rock Art Enhancer version 2.7
Updated At: 2022-11-26
Changes: 2.7: Added button to take photo from app. Allow photo rotation of 0, 90, 180, or 270 degrees.
2.6: Added an option to save photos to your phone's gallery, instead of to the app's private data storage. Significantly improved performance of YUV and Lab Custom modes.
2.5: Added "D.Stretch Lab Custom" enhancement mode.
2.4: Updated to target Android SDK 31
2.3: Added a "dark mode" and also made a minor improvement to mode changing on "Live mode" page.
Rock Art Enhancer version 2.3
Updated At: 2022-03-04
Changes: 2.3: Added a "dark mode" and also made a minor improvement to mode changing on "Live mode" page.
2.2: Added a "Browse saved files" option to the main page menu.
2.1: Show location of data files on "About" dialog.
2.0: Upgraded to target Android SDK 30 as required by Google.
Rock Art Enhancer version 2.2
Updated At: 2021-09-22
Changes: 2.2: Added a "Browse saved files" option to the main page menu.
2.1: Show location of data files on "About" dialog.
2.0: Upgraded to target Android SDK 30 as required by Google.
1.18: Bug fixes.
1.17: Updated to target SDK 29 as required by Google.
1.16: Fixed crash bug related to the use of the flash on live enhancement page.
1.15: Added Color Threshold Lab, Detect shadows, and Remove shadows options to photo enhancement page.
Rock Art Enhancer version 2.1
Updated At: 2021-06-02
Changes: 2.1: Show location of data files on "About" dialog.
2.0: Upgraded to target Android SDK 30 as required by Google.
1.18: Bug fixes.
1.17: Updated to target SDK 29 as required by Google.
1.16: Fixed crash bug related to the use of the flash on live enhancement page.
1.15: Added Color Threshold Lab, Detect shadows, and Remove shadows options to photo enhancement page.
1.14: Changes to user interface. Added YUV Custom and clustering modes
Rock Art Enhancer version 1.18
Updated At: 2021-05-04
Changes: 1.18: Bug fixes.
1.17: Updated to target SDK 29 as required by Google.
1.16: Fixed crash bug related to the use of the flash on live enhancement page.
1.15: Added Color Threshold Lab, Detect shadows, and Remove shadows options to photo enhancement page.
1.14: Changes to user interface. Added YUV Custom and clustering modes
Rock Art Enhancer version 1.17
Updated At: 2020-09-22
Changes: 1.17: Updated to target SDK 29 as required by Google.
1.16: Fixed crash bug related to the use of the flash on live enhancement page.
1.15: Added Color Threshold Lab, Detect shadows, and Remove shadows options to photo enhancement page.
1.14: Changes to user interface. Added YUV Custom and clustering modes
1.11: Improvements to file handling on Auto Photo Enhancement page.
Rock Art Enhancer version 1.16
Updated At: 2020-09-08
Changes: 1.16: Fixed crash bug related to the use of the flash on live enhancement page.
1.15: Added Color Threshold Lab, Detect shadows, and Remove shadows options to photo enhancement page.
1.14: Changes to user interface. Added YUV Custom and clustering modes
1.11: Improvements to file handling on Auto Photo Enhancement page.
Rock Art Enhancer version 1.14
Updated At: 2019-08-26
Changes: 1.14: Changes to user interface. Added YUV Custom and clustering modes
1.11: Improvements to file handling on Auto Photo Enhancement page.
1.5: Added "D.Stretch Lab 2" and "Hist. Eq. Saturation" enhancement modes.
1.4: Added the ability to save enhanced images.
1.3: Added "Auto-level" and "Increase saturation" enhancement modes.
1.2: Long-press live screen to toggle flash on/off.
1.1: Touch live screen to toggle between normal and alternate enhancement modes.
1.0: Initial version.
Disclaimer
Official Google Play Link
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