Develop an experimentation pipeline in Google Colab for generating a $2048$ x $2048$ image from a text prompt describing a person and their background, emphasizing photorealism, steerability, and resource$/$time efficiency.

Core Requirements:$$ Platform: Google Colab$/$Kaggle$/$Local Setup.$$ Programming Language: Python.$$ Models: Explore AI$/$ML models$/$components for image generation and manipulation.$$ Automatic Workflow: Ensure the process requires no manual intervention.Tasks:$1.$ Image Generation from Text Prompt:$$ Input: A text prompt describing a person and a background.$$ Process: Experiment with different models or combinations thereof to generate an image that matches the prompt.$$ Output: A $2048$ x $2048$ photorealistic image of the described scene.Implementation Guidelines:$$ Explore various Al models, including community$-$finetuned checkpoints, custom models, Mixture of models, LoRAs or whatever you can research to be a great direction for enhanced results.$$ Prioritize photorealism, steerability$($the ability to control image details according to possible different complex prompts$),$ and optimization of processing time and resources.$$ You'd need to upscale the image from base quality.Experimentation and Reporting:$$ Document the experimentation process, including different models and methods tested and corresponding resultant images, with a focus on photorealism, steerability, and efficiency.$$ Report should detail the approach, experiments, observations, and inferences about the most effective pipeline for the task.$$ Encourage comprehensive documentation of both successes and limitations with corresponding examples.Submission:$$ Google Colab notebook with code.$$ Detailed report on experimentation and findings.Evaluation Criteria:$$ Effectiveness in achieving photorealism$$ Prompt Steerability$$ Creativity and efficiency of the solution.$$ Comprehensive and clear documentation and reporting for narrowing down the right expereimentation direction.$$ Step$-$wise Evaluation will be done. $($Add a brief about your familiarity of Diffusion space before the assignment at the top$).$