论文标题
面向年龄的面部合成,有条件歧视池和对抗三重损失
Age-Oriented Face Synthesis with Conditional Discriminator Pool and Adversarial Triplet Loss
论文作者
论文摘要
香草生成的对抗网络(GAN)通常用于生成描绘老化和复兴面孔的逼真的图像。然而,这种香草甘斯在面向年龄的面部合成任务中的性能通常会因模式崩溃问题而损害,这可能会导致产生的面孔的变化很小,合成精度较差。此外,最近以年龄为导向的面部合成方法使用L1或L2约束来保留有关合成面的身份信息,当这些约束与琐碎的权重因子相关联时,这隐含地限制了身份永久性的能力。在本文中,我们提出了一种以年龄为导向的面部综合任务的方法,该方法具有具有强大的身份永久性能力,可以达到高综合精度。具体而言,为了达到高综合精度,我们的方法通过新的条件歧视池(CDP)解决模式崩溃问题,该问题由多个歧视因子组成,每个歧视因子都针对一个特定的年龄类别。为了获得强大的身份永久能力,我们的方法使用了一种新颖的对抗性三重态损失。这种基于三重态损失的损失增加了排名操作,以进一步将阳性嵌入到锚固嵌入,从而显着降低了特征空间内的阶级方差。通过广泛的实验,我们表明我们所提出的方法在合成的准确性和身份持久性能力方面优于最先进的方法。
The vanilla Generative Adversarial Networks (GAN) are commonly used to generate realistic images depicting aged and rejuvenated faces. However, the performance of such vanilla GANs in the age-oriented face synthesis task is often compromised by the mode collapse issue, which may result in the generation of faces with minimal variations and a poor synthesis accuracy. In addition, recent age-oriented face synthesis methods use the L1 or L2 constraint to preserve the identity information on synthesized faces, which implicitly limits the identity permanence capabilities when these constraints are associated with a trivial weighting factor. In this paper, we propose a method for the age-oriented face synthesis task that achieves a high synthesis accuracy with strong identity permanence capabilities. Specifically, to achieve a high synthesis accuracy, our method tackles the mode collapse issue with a novel Conditional Discriminator Pool (CDP), which consists of multiple discriminators, each targeting one particular age category. To achieve strong identity permanence capabilities, our method uses a novel Adversarial Triplet loss. This loss, which is based on the Triplet loss, adds a ranking operation to further pull the positive embedding towards the anchor embedding resulting in significantly reduced intra-class variances in the feature space. Through extensive experiments, we show that our proposed method outperforms state-of-the-art methods in terms of synthesis accuracy and identity permanence capabilities, qualitatively and quantitatively.