nano_banana: Generate, edit, or transfer images using Gemini API

In gemini.R: Interface for 'Google Gemini' API

Generate, edit, or transfer images using Gemini API

Description

Generate a new image, edit an existing image, or transfer styles/content between two images using the Gemini API (aka Nano Banana). This function supports image generation from text, image editing with a prompt and a base image, and image transfer between two images.

Usage

nano_banana(
  prompt,
  type = "generate",
  img_path = NULL,
  img_path2 = NULL,
  output_path
)

Arguments

prompt	Character. The prompt describing the image to generate or edit.
type	Character. The type of operation: "generate" (text-to-image), "edit" (image editing), "transfer" (image-to-image).
img_path	Character. Path to the input image PNG file.
img_path2	Character. Path to the second input image PNG file.
output_path	Character. The filename to save the result image.

Value

The path to the saved image file, or NULL if an error occurred.

Examples

## Not run: 
# Generate an image from text
prompt <- "Create a picture of a nano banana dish in a fancy restaurant with a Gemini theme"
nano_banana(prompt, output_path = "gemini-native-image.png")

# Edit an image with a prompt (continued from generate)
prompt <- paste(
  "Create a picture of my cat eating a nano-banana",
  "in a restaurant under the Gemini constellation"
)
nano_banana(
  prompt,
  type = "edit",
  img_path = "gemini-native-image.png",
  output_path = "edited_image.png"
)

# Transfer style/content between two images
prompt <- paste(
  "Take the blue floral dress from the first image",
  "and let the woman from the second image wear it."
)
nano_banana(
  prompt,
  type = "transfer",
  img_path = "dress.png",
  img_path2 = "model.png",
  output_path = "transferred_image.png"
)

## End(Not run)

gemini.R documentation built on Sept. 1, 2025, 5:10 p.m.