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Morph intermediate images #794

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hsp opened this issue Jan 24, 2023 · 11 comments
Open

Morph intermediate images #794

hsp opened this issue Jan 24, 2023 · 11 comments

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@hsp
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hsp commented Jan 24, 2023

Can you create a series of images of different stages of morphing between th etwo originak images (not only a single image as in the examples)?
I would like to create a a GIF from such a serie.
Cheers
Hans
@brmarkus
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Are you referring to the sample "https://github.com/spmallick/learnopencv/tree/master/FaceMorph" and the blog "https://learnopencv.com/face-morph-using-opencv-cpp-python/", and experimented with the referenced equation "(2)" under "https://learnopencv.com/face-morph-using-opencv-cpp-python/#id1540306373" within the section "Alpha blend warped images"?

@hsp
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hsp commented Jan 24, 2023

I looked at them all, but it seem (at least to me) that they all result in a single 'final morphed image'.
I am looking for ways to reveal a series of additional, images, in between.

@brmarkus
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Have a look at the embedded Youtube video, at this time-position: "https://youtu.be/pqpS6BN0_7k?t=45"
=> "Change the morphing parameter alpha for animation"
=> referring to equation (2)

@hsp
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hsp commented Jan 25, 2023 via email

@brmarkus
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Try adding a slider/trackbar (https://docs.opencv.org/3.4/da/d6a/tutorial_trackbar.html) to the test-code.

@brmarkus
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With a slider/trackbar:
image
image
image

@hsp
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hsp commented Jan 25, 2023 via email

@brmarkus
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You mean e.g. EXIF data (like GPS, longitude or latitude) in JPGs of TIFF files?

After cv2.imread() you get a matrix with the "raw data" only, decompressed raw pixel data, without any metadata.

But look into e.g. "https://stackoverflow.com/questions/56699941/how-can-i-insert-exif-other-metadata-into-a-jpeg-stored-in-a-memory-buffer" for how to extract and add-back EXIF using additional packages (in Python).

@brmarkus
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Any open questions left?
Feel free to close this issue.

@hsp
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hsp commented Jan 27, 2023 via email

@brmarkus
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Good luck with the exams!

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@hsp @brmarkus