Online Lens Motion Smoothing for Video Autofocus

Ablation study (pdf)

Smoothing results (pdf)

The videos used for our user study (video)

Download supplemental materials (zip)

We provide our ablation study with different LSTM architectures and settings in a pdf file. This is related to Section 3.3 of the main paper.
(Click to open pdf in new window).

In case your browser has issues viewing pdf, please find pdf file in the supplemental materials directory. (click to download).

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We report the BLSTM accuracy of each objective for different scenes and all the qualitative results of different smoothing methods applied on 36 videos in a pdf file. This is related to Section 4 of the main paper.
(Click to open pdf in new window).

In case your browser has issues viewing pdf, please find pdf file in the supplemental materials directory. (click to download).

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Below we present direct pair comparison between two methods applied on the same video. The videos below were used to conduct our user study. This is related to Section 4 and 5 of the main paper.

Note: This HTML page is encoded using HTML5. The webpage also uses locally defined Javascript code to allow you to select different videos to view. Please make sure JavaScript is enabled.

We plot the lens positions over time and the effect on sharpness value for each video frame.
Total number of lens movements for each method is shown in the plot's legend.
Recall, SG stands for the Savitzky-Golay offline method, BLSTM is our online BLSTM model trained on the data produced by SG, and WMA is our online weighted moving average.

Note: During our user study we did not show the plots of the lens positions and sharpness value.
We present these plots only here for clarification and to show the updates on the lens position and sharpness value for each video frame.

Scene 2, 9 Focus Points

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

Scene 4, 51 Focus Points

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

Scene 5, 51 Focus Points

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

Scene 6, 51 Focus Points

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

Scene 8, Face Detector

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

Scene 9, 51 Focus Points

To view a video, first select pair comparison, then click on method number button to play the video of the selected method.

Select pair comparison: Conventional vs. BLSTM Conventional vs. WMA BLSTM vs. WMA
Click on method number to play the video: Method 1 Method 2

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Below is the supplemental materials submitted to WACV 2020. Click on the name or icon to download the .zip folder.

[Supplemental materials]

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