![]() This separate algorithm identified features in the original images (for example, a sky, some trees, or people) and scaled them according to their importance to the photo. To get around this, we took each image and applied content-aware scaling. If we simply stretched them, then they wouldn’t look like actual photos people edit. But if the photo is portrait or landscape, potentially important details at the edges of the image would be lost if we cropped them. That meant we needed to turn every photo into a uniform small square image. Most neural networks work with small, fixed-resolution images, which usually have to be square. Once we had our image pairs, we could start training. We decided to take millions of good images and create a separate algorithm to ‘break’ them in as natural a way as possible to mimic real-world white balance issues. For that reason, we had to find a different approach. ![]() Even if there was, we’d still need to get someone to fix each one and that’s not exactly efficient either. It probably goes without saying that there’s no giant repository of badly white balanced images to just download. In this case, we needed millions of images with bad white balance and good white balance. The models then make complicated, seemingly random connections based on your tests and their quality depends on how good your tests and datasets are. Behind that button, there’s a 200-layer-deep neural network trained on millions of image pairs and integrated via the awesome Core ML.ĭid you know that neural networks are practically magic and no one knows how they really work? Basically, getting machine learning models to do what you want them to requires you to test them on really huge datasets. PIXELMATOR WHITE BALANCE PROSo, in Pixelmator Pro 1.1 Monsoon, we’ve added the machine learning-powered Auto White Balance to make fixing the white balance in any photo as simple as clicking one little button. I mean, adding yellow cancels out a blue tint, how does that work? And if you’re not used to doing it, it’s not all that easy - there are two different sliders that are influenced by each other and it’s not that obvious what they do. ![]() It’s important to get it right because all your later edits depend on it. ![]() When editing photos, fixing the white balance is almost always the first thing photographers do before moving on to any other edits. Although those buttons may be small, there’s a lot of machine learning power behind them and we wanted to talk a little bit about one in particular - Auto White Balance. In Pixelmator Pro 1.1 Monsoon, we added some super cool Auto buttons next to three color adjustments: White Balance, Lightness, and Hue & Saturation. Pixelmator Pro includes one of the best collections of color adjustment tools in any app on any device. ![]()
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