Midjourney is an AI art generator that specializes in creating abstract paintings. The underlying principle is based on generative adversarial networks (GANs) and deep learning techniques. In order to help you better understand the principle of Midjourney, today we try to explain the underlying principle in the most popular language.
The principle of generative adversarial network (GAN) is similar to the game between a thief who specializes in forging paintings and a professional appraiser. In the process, the thief tries to imitate the style of a famous painter to forge the work, and the appraiser strives to identify the forgery. Over time, the skill of the thief gradually improved, the forgery became more realistic, and the appraiser became more and more acute. In GAN, the generator (picture thief) tries to create a realistic image, while the discriminator (appraiser) tries to distinguish between the generated image and the real one. Through this competing process, generators gradually learn to create higher quality images.
Deep learning is another core technology of Midjourney, which can be seen as a diligent student. This student learns a variety of artistic styles and techniques by reading a large number of works of art, and then applies what they learn to their own creations. Similar to human artists, Midjourney needs to constantly learn and practice to improve its creative abilities.
Without further ado, let's illustrate the Midjourney's work process with a concrete example. Let's say we want Midjourney to create an abstract painting of the night starry sky. First, we'll give it keywords like "abstract," "night," and "starry sky." Midjourney then learns the relevant styles and elements from its vast database of artworks. The generator then tries to create a new work based on this information, and the discriminator evaluates the quality of the work. Through many iterations and optimizations, Midjourney culminates in a satisfying abstract picture of the night starry sky.
In practice, Midjourney can generate works of various styles and themes based on user-provided keywords. Here are some examples of prompts:
"Beautiful Ocean Landscape": Midjourney will create a painting of an ocean landscape with abstract elements based on this prompt.
"Cubist Cityscape": Based on this tip, Midjourney will try to imitate the Cubist style and create a unique cityscape painting.
"Forest of Light and Shadow": In this example, Midjourney will combine Impressionist painting techniques to present a forest painting full of life.
"City Sisters": In this example, Midjourney directly generates portraits of two girls.
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