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Updated 2 years ago

image-captioning

Image Captioning with ClipCap

author: David Wang


Description

This operator generates the caption with ClipCap which describes the content of the given image. ClipCap uses CLIP encoding as a prefix to the caption, by employing a simple mapping network, and then fine-tunes a language model to generate the image captions. This is an adaptation from rmokady/CLIP_prefix_caption.


Code Example

Load an image from path './hulk.jpg' to generate the caption.

Write a pipeline with explicit inputs/outputs name specifications:

from towhee import pipe, ops, DataCollection

p = (
    pipe.input('url')
    .map('url', 'img', ops.image_decode.cv2_rgb())
    .map('img', 'text', ops.image_captioning.clipcap(model_name='clipcap_coco'))
    .output('img', 'text')
)

DataCollection(p('./image.jpg')).show()

result2


Factory Constructor

Create the operator via the following factory method

clipcap(model_name)

Parameters:

model_name: str

​ The model name of ClipCap. Supported model names:

  • clipcap_coco
  • clipcap_conceptual


Interface

An image captioning operator takes a towhee image as input and generate the correspoing caption.

Parameters:

data: towhee.types.Image (a sub-class of numpy.ndarray)

​ The image to generate caption.

Returns: str

​ The caption generated by model.

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