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<!DOCTYPE html>
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    <title>Style-Based Age Manipulation</title>
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<div class="section hero p2m">
    <div class="container-2 p2m_header_v2 w-container">
        <span>
            <h1 class="title">Style-Based Age Manipulation</h1>
        </span>
        <span>
            <h1 class="subheader"> Only a Matter of Style: Age Transformation Using a Style-Based Regression Model</h1>
        </span>
        <div class="p2m_authors_list_single w-row">
            <span class="center">
                <div class="w-col w-col-4 w-col-small-4 w-col-tiny-6">
                    <a class="authors" href="https://yuval-alaluf.github.io/" target="_blank">Yuval Alaluf</a>
                </div>
                <div class="w-col w-col-4 w-col-small-4 w-col-tiny-6">
                    <a class="authors" href="https://orpatashnik.github.io/" target="_blank">Or Patashnik</a>
                </div>
                <div class="w-col w-col-4 w-col-small-4 w-col-tiny-6">
                    <a class="authors" href="https://www.cs.tau.ac.il/~dcor/" target="_blank">Daniel Cohen-Or</a>
                </div>
            </span>
        </div>
        <div class="div-block-10">
            <div class="equal_v2">Tel Aviv University</div>
        </div>
        <div class="div-block-10">
            <div class="equal_v3">SIGGRAPH 2021</div>
        </div>

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                    <a href="https://arxiv.org/abs/2102.02754" target="_blank"><i
                            class="far fa-4x fa-file text-primary mb-3 "></i></a>
                </a></div>

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                    <a href="https://github.com/yuval-alaluf/SAM" target="_blank"><i
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                    <a href="http://colab.research.google.com/github/yuval-alaluf/SAM/blob/master/notebooks/inference_playground.ipynb" target="_blank"><i
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                    <strong style="color:#18446c" class="icon-bold-text">Code</strong>
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                <div class="text-block-2"><strong style="color:#18446c" class="icon-bold-text">Colab</strong></div>
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                <div class="text-block-2"><strong style="color:#18446c" class="icon-bold-text">Demo</strong></div>
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<div class="white_section">
    <div class="w-container"><h2 class="grey-heading">Abstract</h2>
        <p class="paragraph-3 the_text">
            The task of age transformation illustrates the change of an individual's appearance over time. Accurately modeling this complex transformation over an input facial image is extremely challenging 
            as it requires making convincing and possibly large changes to facial features and head shape, while 
            still preserving the input identity. In this work, we present an image-to-image translation method 
            that learns to directly encode real facial images into the latent space of a pre-trained unconditional
            GAN (e.g., StyleGAN) subject to a given aging shift. We employ a pre-trained age regression network
            used to explicitly guide the encoder in generating the latent codes corresponding to the desired 
            age. In this formulation, our method approaches the continuous aging process as a regression task 
            between the input age and desired target age, providing fine-grained control over the generated 
            image. Moreover, unlike other approaches that operate solely in the latent space using a prior on 
            the path controlling age, our method learns a more disentangled, non-linear path. Finally, we 
            demonstrate that the end-to-end nature of our approach, coupled with the rich semantic latent space
            of StyleGAN, allows for further editing of the generated images. Qualitative and quantitative 
            evaluations show the advantages of our method compared to state-of-the-art approaches.
        </p>
    </div>
</div>



<div class="section the_section" data-anchor="slide1">
    <div class="w-container"><h2 class="grey-heading">Videos</h2>
        <div class="w-embed-youtubevideo stega_movie youtube" id="w-node-e5e45b1d55ac-81500a5f"
             style="padding-top:56.17021276595745%; width:90%; margin:0 auto">
            <iframe allow="autoplay; encrypted-media" allowfullscreen="" frameBorder="0"
                    src="https://www.youtube.com/embed/X_pYC_LtBFw?rel=1&amp;controls=1&amp;autoplay=0&amp;mute=0&amp;start=0"
                    style="position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:auto"></iframe>
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             style="padding-top:56.17021276595745%; width:90%; margin:0 auto;">
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                    style="position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:auto"></iframe>
        </div>
    </div>

</div>

<div class="white_section">
    <div class="w-container"><h2 class="grey-heading">Demo</h2>
        <p class="paragraph-3 the_text">
            <a class="authors" style="font-size: 12pt;" href="https://replicate.ai/" target="_blank">Replicate</a> have designed a demo for SAM where you can easily 
            upload an image and run SAM on a desired set of ages!  
        <br>
            Check out the demo <a class="authors" style="font-size: 12pt;" href="https://replicate.ai/yuval-alaluf/sam" target="_blank">here</a>!
        </p>
    </div>
</div>

<div class="white_section">
    <div class="w-container"><h2 class="grey-heading">Overview</h2>
        <p class="paragraph-3 the_text" >
            We introduce SAM --- Style-based Age Manipulaton, a technique for modeling fine-grained age transformation from a single input facial image. SAM pairs a pre-trained, fixed StyleGAN generator with an encoder network tasked with encoding real face images into a series 
            of style vectors subject to the desired age change.
        </p>
        <div>   
            <span class="center" id="architecture" >
                <img src="images/architecture.png" width=95%/>
            </span>
        </div>
        <br><br>
         <p class="paragraph-3 the_text">
            A pre-trained, fixed age regressor guides the encoder into generating the desired age-transformed latent codes. 
            As a result, SAM views human aging as a regression problem to the desired target age.

        </p>
        <div>
            <span class="center" id="architecture" >
                <img src="images/aging.png" width=95%/>
            </span>
        </div>

        <br><br>
        <p class="paragraph-3 the_text">
            Guided by the age regressor, SAM learns <i>non-linear</i> paths able to better disentangle age from other attributes 
            (pose, hair style, etc.). These paths are well-suited to the complex nature of StyleGAN’s latent space manifold.
        </p>
        <div>
            <span class="center" id="architecture" >
                <img src="images/latent_paths.png" width=95%/>
            </span>
        </div>
    </div>
</div>

<div class="white_section">
    <div class="w-container"><h2 class="grey-heading">Results</h2>

    <p class="paragraph-3 the_text">
        Below we show aging results between the ages 0 and 100.
    </p>

    <div class="row" style="text-align:center;padding:0;margin:0" id="gifs">

        <span class="center">
            <video onloadeddata="this.play();" poster="poster.png" width="45%" playsinline loop muted controls>
                <source src="images/1287_animation.mp4" type="video/mp4" />
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                <source src="images/866_animation.mp4" type="video/mp4" />
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                <source src="images/2417_animation.mp4" type="video/mp4" />
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                <source src="images/2417_animation.mp4.ogg" type="video/ogg" />
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                <source src="images/1421_animation.mp4.ogg" type="video/ogg" />
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        </span>

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            <video onloadeddata="this.play();" poster="poster.png" width="45%" playsinline loop muted controls>
                <source src="images/1046_animation.mp4" type="video/mp4" />
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                <source src="images/346_animation.mp4" type="video/mp4" />
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                <source src="images/346_animation.mp4.ogg" type="video/ogg" />
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        <span class="center">
            <video onloadeddata="this.play();" poster="poster.png" width="45%" playsinline loop muted controls>
                <source src="images/DavidTennant_animation.mp4" type="video/mp4" />
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                <source src="images/jackson_animation.mp4" type="video/mp4" />
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        </span>
        <br>

    
    </div>
    </div>

    <div class="white_section">
        <div class="w-container"><h2 class="grey-heading">Acknowledgements</h2>
            <p class="paragraph-3 the_text">
                We would like to thank Elad Richardson, Kfir Goldberg, Ohad Fried, Yotam Nitzan, and Zongze Wu for their fruitful discussions and early feedback. 
                We would also like to thank the anonymous reviewers for their insightful comments and constructive remarks. 
                This work was supported in part by the Israel Science Foundation under Grant No. 2366/16 and Grant No. 2492/20.
            </p>
        </div>
    </div>

    <div class="white_section">
        <div class="w-container"><h2 class="grey-heading">Reference</h2>
            <p class="paragraph-3 the_text">
                <code style="overflow-x: scroll; white-space: nowrap; font-size: 10pt">
                    @article{alaluf2021matter, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;author = {Alaluf, Yuval and Patashnik, Or and Cohen-Or, Daniel}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title = {Only a Matter of Style: Age Transformation Using a Style-Based Regression Model}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;journal = {ACM Trans. Graph.}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;issue_date = {August 2021}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;volume = {40}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;number = {4}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;year = {2021}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;articleno = {45}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;publisher = {Association for Computing Machinery}, <br>
                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;url = {https://doi.org/10.1145/3450626.3459805} <br>
                    }
                </code>
                
            </p>
        </div>
    </div>

</div>

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