About José Tijerín
Hi, I am José Tijerín, a digital illustrator, 3D sculptor, and videogame developer. My “Dear Althea” is a visual novel game that is available on Steam. Another game I am currently working on, called “From the Streets to the Script: A Carabanchel Story”, can also be added to your favorites list on Steam.
The information in this article is lifted from the AI with Cartoon Animator (CTA) tutorial video, which you are encouraged to watch for a comprehensive insight into my creative process. You can see an example of the final animation described in this article by watching the tutorial video.
The Use of Artificial Intelligence
AI is a revolutionary technology that gives artists like me the time to focus more of our efforts on creativity. Still, to get the most out of AI, we need to harness our imagination and hone the technical skills necessary to operate AI in the first place. It is equally important to be aware of the ethical and legal implications of relying on AI to generate artwork, especially regarding transparency around the way these tools are used in the creative process.
Tips on Creating AI-Generated Images
Getting the AI to generate the right images that we want can be difficult. The smart way to go about it is to give it consistently good prompts. But, what exactly is a prompt? Simply put, it is a set of words describing the image that we want to generate, and it is usually fed to the AI from a chatbox interface. By pulling data from what it has learned from its countless sessions with training models, the AI can analyze the given information to come up with an appropriate response.
When writing prompts, I suggest only allowing the AI to derive results from images that are in the public domain. There is a high probability in the future that all AI will base their creations solely on publicly available images; But for now, we must manually direct it to do so. One way to do this is to include the name of an original creator whose works are already in the public domain. High-quality digitized images of their works are likely readily available in the AI’s database—take, for instance, the great works of John William Waterhouse. However, there is a method that gives us more control, and thereby, better results.
Creating & Optimizing Animation Drawings with AI Generators
The technique I’m about to mention can be used with almost any image-generating AI. That is the use of images to generate other images using a machine-learning model. To elaborate, if the AI is fed a sketch with the concepts we want our illustration to have, we can have it generate alternative images based on our original concept. In this way, AI can help with 2D character creation.
Personally, I prefer to put a few character sketches into the Artbreeder AI and let it quickly derive a few more character concepts. Out of the ideas that it gives me, I continue to refine my ideas based on what resonates. Admittedly, it’s a very fun way of working that I highly recommend you try.
Whatever procedure you choose, a good rule of thumb is to master the tool rather than have it master you—that includes not losing sight of the goal. In this particular case, we are looking for a result that lends itself to painless animation in CTA, and that would require us to retouch the character—like furnishing the rest of my example image with the missing legs. For solutions to problems such as these, we can consult the AI community at https://huggingface.co/. On that website, we can explore all sorts of great AIs that can be used for free, right in the browser.
Of particular interest is Stable Diffusion Infinity which is promoted for its ability to zoom into an image with great accuracy. It belongs to a broader family of tools under the Stable Diffusion technology. This AI is completely free and, unlike others, remains open source. It is also my favorite and I use it exclusively for its accuracy. That said, it does require copious amounts of prompts to get it there. The more prompts given, the better the final result will be and the closer the output image will match what you had in mind. Lastly, if you are using the Image-to-Image function, be cognizant of the input image resolution as that will affect the quality of the generated images. For high-quality results, be sure to feed it images with adequate resolution and detail.
Tailoring the Illustration for Cartoon Animator
When our sketch has been turned into the desired illustration with the help of AI, we can start retouching it. Our initial instinct may start us off with refining the hands, but I recommend taking this opportunity to make the illustration more our own. Namely, we should modify the 2D character and decorative elements according to our tastes and bring them closer to the style of character we have in mind. This process is of vital importance if you are working on a project with multiple characters and they all need to complement each other in a cohesive style. Personally, I think it’s best to remove the whole inside of the face and make it individually. This way, all the faces of the characters will have a consistent style and lets us animate with ease in CTA.
Free Vector Templates for 2D Characters
When we have finished with the 2D character creation, it is time to visit the CTA website and download the free templates to animate our character. If we open them, we can see that they work by separating the joints of the body by layers and grouping them into folders. We will need to do the same with our character by separating it into parts. In the process, we must take into account the layers that go on top and those that go beneath. By imagining the poses that the character will assume during animation, we can make sure to not leave gaps in the design that will cause the character to look unsightly in the final animation.
CTA allows us to import vector graphics for limitless resizing while keeping the resolution sharp and quality high for graphic animations. If we use a program to automatically vectorize the illustration, we can easily make use of this advantage.
Animating 2D Characters in the Simplest Way
Never before has it been so easy to create an animated 2D character of such high quality in such a short amount of time. Thanks to CTA, we can bring illustrations to life in a very simple way and without the need to have much knowledge of 2D animation. When the exported character is introduced in CTA, it comes pre-rigged, which saves us a ton of time. When a background scene is generated with AI, we can easily integrate it with our character with the help of the intuitive tools of the program.
Giving life to our character is just a couple of clicks away when we use the large library of motions that CTA has to offer. The ones I like to use the most are the 3D motion effects. With them, I can control the animation on the 2D plane with precision.
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The original article was written by José Tijerín and featured on Creative Bloq.