Dart Requires Chilkat v11.4.0+

AI Modify Existing Image with Text Prompt

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Uses an AI text prompt and uploaded image data to modify an existing image and receive the modified output. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // Load the data from an existing image.
  final bdImageData = CkBinData();
  try {
    bdImageData.loadFile('qa_data/jpg/kid_blue_coat.jpg');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final ai = CkAi();

  ai.provider = 'openai';

  // Use your provider's API key.
  ai.apiKey = 'MY_API_KEY';

  // Choose a model.
  ai.model = 'gpt-5.6-terra';

  final askParams = CkJsonObject();
  askParams.updateString('image.output_format', 'jpeg');
  ai.setAskParams(askParams);

  ai.inputAddImageData(bdImageData, '');
  ai.inputAddText('Modify the image by replacing the blue coat with a Metallica T-shirt.');

  // Give the AI some time (2 minutes).
  ai.idleTimeoutMs = 120000;

  // Ask the AI for image output.
  try {
    ai.ask('image');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Get the image response data.;
  try {
    ai.getOutputBd(bdImageData);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  bdImageData.writeFile('c:/aaworkarea/out.jpg');

  print('Success.');

  // -------------------------------
  // Sample Input:
  // -------------------------------
  // 

  // -------------------------------
  // Sample Output:
  // -------------------------------
  // 
}