How to use the command waifu2x-ncnn-vulkan (with examples)
This article provides a guide on how to use the command waifu2x-ncnn-vulkan, which is an image upscaler for manga/anime-style images using the NCNN neural network framework.
Use case 1: Upscale an image
Code:
waifu2x-ncnn-vulkan -i path/to/input_file -o path/to/output_file
Motivation: This use case is for upscaling an image using the waifu2x-ncnn-vulkan command. It is useful when you want to enhance the resolution of an image to improve its quality.
Explanation:
-i path/to/input_file: specifies the path to the input image file that needs to be upscaled.-o path/to/output_file: specifies the path where the upscaled image should be saved.
Example output: The input image will be upscaled and the resulting image will be saved in the specified output file path.
Use case 2: Upscale an image by a custom scale factor and denoise it
Code:
waifu2x-ncnn-vulkan -i path/to/input_file -o path/to/output_file -s 1|2|4|8|16|32 -n -1|0|1|2|3
Motivation: In some scenarios, you may want to apply a specific scale factor to the image and also denoise it. This use case allows you to achieve that by providing custom scale factors and denoise levels.
Explanation:
-s 1|2|4|8|16|32: specifies the custom scale factor to apply to the image. You can choose from 1, 2, 4, 8, 16, or 32.-n -1|0|1|2|3: controls the denoising level. You can set it to -1 (no denoise), 0 (auto denoise), or a specific level from 1 to 3.
Example output: The image will be upscaled using the specified scale factor and denoised according to the selected denoise level. The resulting image will be saved in the specified output file path.
Use case 3: Save the upscaled image in a specific format
Code:
waifu2x-ncnn-vulkan -i path/to/input_file -o path/to/output_file -f jpg|png|webp
Motivation: Sometimes, you may want to save the upscaled image in a specific format other than the default one. This use case allows you to choose between the JPG, PNG, or WebP formats.
Explanation:
-f jpg|png|webp: specifies the output image format. You can choose from JPG, PNG, or WebP.
Example output: The image will be upscaled and saved in the specified output file path, using the chosen image format.
Conclusion
This article provided an overview of the waifu2x-ncnn-vulkan command and illustrated three different use cases with their respective code, motivations, explanations, and example outputs. By following these examples, users will be able to effectively utilize the command for image upscaling and customization purposes.
