MergePhotos
Android application for merging photos. Internaly it uses OpenCL.
- Inpaint
- Long exposure improuvements
- Focus stacking
Panorama
Needs minimum 2 photos.
| Input Image 1 | Input Image 2 |
|---|---|
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| Panorama: Plane | Panorama: Cylindrical | Panorama: Spherical |
|---|---|---|
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Aligned
Images are aligned based on the first image. Aligned images will fill with black missing pixels.
| Input Image 1 | Input Image 2 | Input Image 3 |
|---|---|---|
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| Output Image 1 (same as Input Image 1) | Output Image 2 | Output Image 3 |
|---|---|---|
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HDR
Images are aligned before merging.
| Input Image 1 | Input Image 2 | Input Image 3 |
|---|---|---|
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Output
Long Exposure
Images are aligned before merging. Modes:
- Average: will make changes looks like ghosts.
- Nearest to Average (minimum 3 images): will make changes disapear.
- Light: keep lightest pixels
- Dark: keep darkest pixels
| Input Image 1 | Input Image 2 | Input Image 3 |
|---|---|---|
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| Average | Nearest to Average |
|---|---|
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Interpolation
| Linear (default) | Cubic | Area | Lanczos4 |
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Lanczos4 looks to be the sharpest so I will switch from default to this one.
Ideas
Inpaint
When creating panoramas the result images have black borders.
| Panorama | Mask |
|---|---|
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I tested opencv / opencv_contrib to fill this areas (the time it took is on my laptop not on adroid device):
| NS | TELEA | SHIFTMAP | FSR FAST | FSR BEST |
|---|---|---|---|---|
| 4.57 seconds | 4.04 seconds | 22.68 seconds | 190.09 seconds | 3086.39 seconds |
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From my point of view:
- SHIFTMAP: looks the best (at leat for my test images) but seems a little too slow for a android (to be tested)
- NS: looks OK and the time is decent
- TELEA: doesn't look great
- FSR (FAST & BEST): are too slow
Long exposure improuvements
If you capture 2-3 images of a waterfall the water don't look blurry enought. Try to add some blur / motion blur on areas that are different. (I need so take some interesting shots first.)