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ashutoshd649 / repository
Image Captioning AI using CNN (ResNet50/VGG16) + LSTM & Transformer decoder trained on Flickr8k dataset. Combines Computer Vision & NLP to auto-generate captions. Includes Flask web app, beam search, BLEU evaluation & 4 weekly Jupyter notebooks. Built with PyTorch.
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This score does not audit code, security, maintainers, documentation quality, or suitability. Verify the repository and its current documentation before adoption.
Combines Computer Vision (ResNet/VGG) + NLP (LSTM/Transformer) to auto-generate image captions.
| Week | Topic | Files |
|---|---|---|
| Week 1 | EDA, data preprocessing, feature extraction | notebooks/Week1_EDA_and_Features.ipynb |
| Week 2 | LSTM-based caption model (train + eval) | notebooks/Week2_LSTM_Model.ipynb |
| Week 3 | Transformer-based caption model | notebooks/Week3_Transformer_Model.ipynb |
| Week 4 | Flask web app + final demo | notebooks/Week4_WebApp_and_Demo.ipynb |
image_captioning_internship/
├── README.md
├── requirements.txt
├── setup.py
├── config.py # All hyperparameters & paths
│
├── src/
│ ├── __init__.py
│ ├── dataset.py # Flickr8k / COCO dataset loader
│ ├── feature_extractor.py # ResNet50 / VGG16 feature extraction
│ ├── vocabulary.py # Build & manage vocabulary
│ ├── lstm_model.py # CNN+LSTM model
│ ├── transformer_model.py # CNN+Transformer model
│ ├── train.py # Training loop
│ ├── evaluate.py # BLEU score evaluation
│ └── inference.py # Caption generation (greedy + beam search)
│
├── notebooks/
│ ├── Week1_EDA_and_Features.ipynb
│ ├── Week2_LSTM_Model.ipynb
│ ├── Week3_Transformer_Model.ipynb
│ └── Week4_WebApp_and_Demo.ipynb
│
├── templates/
│ └── index.html # Flask web UI
├── static/
│ ├── css/style.css
│ └── js/app.js
│
├── app.py # Flask web application
├── train_main.py # CLI training script
├── tests/
│ └── test_all.py
└── docs/
└── project_report_template.docx
pip install -r requirements.txt
data/ folder so you have:
data/Images/ (8000 images)data/captions.txt# Train LSTM model
python train_main.py --model lstm --epochs 20
# Train Transformer model
python train_main.py --model transformer --epochs 20
python app.py
# Open http://localhost:5000
from src.inference import generate_caption
caption = generate_caption("path/to/image.jpg", model_type="lstm")
print(caption)
| Model | BLEU-1 | BLEU-4 | Training Time |
|---|---|---|---|
| CNN + LSTM | ~0.60 | ~0.25 | ~2 hrs (GPU) |
| CNN + Transformer | ~0.65 | ~0.30 | ~3 hrs (GPU) |
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class="w3-bar-item w3-button" href="/python/python_reference.asp">Python Reference</a> <a class="w3-bar-item w3-button" href="/java/java_ref_keywords.asp">Java Reference</a> </div> <div class="w3-col l3 m6"> <h3 class="w3-margin-top">Server Side</h3> <a class="w3-bar-item w3-button" href="/sql/sql_ref_keywords.asp">SQL Reference</a> <a class="w3-bar-item w3-button" href="/mysql/mysql_ref_functions.asp">MySQL Reference</a> <a class="w3-bar-item w3-button" href="/php/php_ref_overview.asp">PHP Reference</a> <a class="w3-bar-item w3-button" href="/asp/asp_ref_response.asp">ASP Reference</a> <h3 class="w3-margin-top">XML</h3> <a class="w3-bar-item w3-button" href="/xml/dom_nodetype.asp">XML DOM Reference</a> <a class="w3-bar-item w3-button" href="/xml/dom_http.asp">XML Http Reference</a> <a class="w3-bar-item w3-button" href="/xml/xsl_elementref.asp">XSLT Reference</a> <a class="w3-bar-item w3-button" href="/xml/schema_elements_ref.asp">XML Schema Reference</a> </div> <div class="w3-col l3 m6"> <h3 class="w3-margin-top">Character Sets</h3> <a class="w3-bar-item w3-button" href="/charsets/default.asp">HTML Character Sets</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_ascii.asp">HTML ASCII</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_ansi.asp">HTML ANSI</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_ansi.asp">HTML Windows-1252</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_8859.asp">HTML ISO-8859-1</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_symbols.asp">HTML Symbols</a> <a class="w3-bar-item w3-button" href="/charsets/ref_html_utf8.asp">HTML UTF-8</a> </div> </div> <br class="hidesm"> </div> </nav> <nav id="nav_exercises" class="w3-hide-small" style="position: absolute; padding-bottom: 60px; display: none;"> <div class="w3-content" style="max-width:1100px;font-size:18px"> <span onclick="w3_close_nav('exercises')" class="w3-button w3-xxxlarge w3-display-topright w3-hover-white 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Previous</span></a> <a class="w3-btn" href="default.asp"><span class="w3-hide-small">Complete HTML </span>Reference</a> <a class="w3-right w3-btn" href="tag_param.asp"><span class="w3-hide-small">Next </span>❯</a> </div> <br> <div class="w3-example"> <h3>Example</h3> <p>A paragraph is marked up as follows:</p> <div class="w3-code notranslate htmlHigh"> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>p<span class="tagcolor" style="color:mediumblue">></span></span>This is some text in a paragraph.<span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/p<span class="tagcolor" style="color:mediumblue">></span></span> </div> <a target="_blank" href="tryit.asp?filename=tryhtml_paragraphs1" class="w3-btn w3-margin-bottom">Try it Yourself »</a> </div> <p>More "Try it Yourself" examples below.</p> <hr> <h2>Definition and Usage</h2> <p>The <code class="w3-codespan"><p></code> tag defines a paragraph.</p> <p>Browsers automatically add a single blank line before and after each <code class="w3-codespan"><p></code> element.</p> <p><strong>Tip:</strong> Use CSS to <a href="/html/html_css.asp">style paragraphs</a>.</p> <hr> <h2>Browser Support</h2> <table class="browserref notranslate"> <tbody><tr> <th style="width:20%;font-size:16px;text-align:left;">Element</th> <th style="width:16%;" class="bsChrome" title="Chrome"></th> <th style="width:16%;" class="bsEdge" title="Internet Explorer / Edge"></th> <th style="width:16%;" class="bsFirefox" title="Firefox"></th> <th style="width:16%;" class="bsSafari" title="Safari"></th> <th style="width:16%;" class="bsOpera" title="Opera"></th> </tr><tr> <td style="text-align:left;"><p></td> <td>Yes</td> <td>Yes</td> <td>Yes</td> <td>Yes</td> <td>Yes</td> </tr> </tbody></table> <hr> <h2>Global Attributes</h2> <p>The <code class="w3-codespan"><p></code> tag also supports the <a href="ref_standardattributes.asp">Global Attributes in HTML</a>.</p> <hr> <h2>Event Attributes</h2> <p>The <code class="w3-codespan"><p></code> tag also supports the <a href="ref_eventattributes.asp">Event Attributes in HTML</a>.</p> <hr> <div id="midcontentadcontainer" style="overflow:auto;text-align:center"> <!-- MidContent --> <!-- <p class="adtext">Advertisement</p> --> <div id="adngin-mid_content-0" data-google-query-id="CKfs_8ueqvcCFXiOSwUd2fYBLg"><div id="sn_ad_label_adngin-mid_content-0" class="sn_ad_label" style="color:#000000;font-size:12px;margin:0;text-align:center;">ADVERTISEMENT</div><div id="google_ads_iframe_/22152718,16833175/sws-hb//w3schools.com//mid_content_1__container__" style="border: 0pt none; display: inline-block; width: 300px; height: 250px;"><iframe frameborder="0" src="https://56d0da6c34aaa471db22bb4266aac656.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html" id="google_ads_iframe_/22152718,16833175/sws-hb//w3schools.com//mid_content_1" title="3rd party ad content" name="" scrolling="no" marginwidth="0" marginheight="0" width="300" height="250" data-is-safeframe="true" sandbox="allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" role="region" aria-label="Advertisement" tabindex="0" data-google-container-id="8" style="border: 0px; vertical-align: bottom;" data-load-complete="true"></iframe></div></div> </div> <hr> <h2>More Examples</h2> <div class="w3-example"> <h3>Example</h3> <p>Align text in a paragraph (with CSS):</p> <div class="w3-code notranslate htmlHigh"> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>p<span class="attributecolor" style="color:red"> style<span class="attributevaluecolor" style="color:mediumblue">="text-align:right"</span></span><span class="tagcolor" style="color:mediumblue">></span></span>This is some text in a paragraph.<span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/p<span class="tagcolor" style="color:mediumblue">></span></span> </div> <a target="_blank" href="tryit.asp?filename=tryhtml_p_align_css" class="w3-btn w3-margin-bottom">Try it Yourself »</a> </div> <div class="w3-example"> <h3>Example</h3> <p>Style paragraphs with CSS:</p> <div class="w3-code notranslate htmlHigh"> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>html<span class="tagcolor" style="color:mediumblue">></span></span><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>head<span class="tagcolor" style="color:mediumblue">></span></span><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>style<span class="tagcolor" style="color:mediumblue">></span></span><span class="cssselectorcolor" style="color:brown"><br>p <span class="cssdelimitercolor" style="color:black">{</span><span class="csspropertycolor" style="color:red"><br> color<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> navy<span class="cssdelimitercolor" style="color:black">;</span></span><br> text-indent<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> 30px<span class="cssdelimitercolor" style="color:black">;</span></span><br> text-transform<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> uppercase<span class="cssdelimitercolor" style="color:black">;</span></span><br></span><span class="cssdelimitercolor" style="color:black">}</span><br></span><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/style<span class="tagcolor" style="color:mediumblue">></span></span><br> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/head<span class="tagcolor" style="color:mediumblue">></span></span><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>body<span class="tagcolor" style="color:mediumblue">></span></span><br><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>p<span class="tagcolor" style="color:mediumblue">></span></span>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.<span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/p<span class="tagcolor" style="color:mediumblue">></span></span><br><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/body<span class="tagcolor" style="color:mediumblue">></span></span><br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/html<span class="tagcolor" style="color:mediumblue">></span></span> </div> <a target="_blank" href="tryit.asp?filename=tryhtml_p_style_css" class="w3-btn w3-margin-bottom">Try it Yourself »</a> </div> <div class="w3-example"> <h3>Example</h3> <p> More on paragraphs:</p> <div class="w3-code notranslate htmlHigh"> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>p<span class="tagcolor" style="color:mediumblue">></span></span><br>This paragraph<br>contains a lot of lines<br>in the source code,<br> but the browser <br>ignores it.<br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/p<span class="tagcolor" style="color:mediumblue">></span></span> </div> <a target="_blank" href="tryit.asp?filename=tryhtml_paragraphs2" class="w3-btn w3-margin-bottom">Try it Yourself »</a> </div> <div class="w3-example"> <h3>Example</h3> <p>Poem problems in HTML:</p> <div class="w3-code notranslate htmlHigh"> <span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>p<span class="tagcolor" style="color:mediumblue">></span></span><br>My Bonnie lies over the ocean.<br>My Bonnie lies over the sea.<br>My Bonnie lies over the ocean.<br>Oh, bring back my Bonnie to me.<br><span class="tagnamecolor" style="color:brown"><span class="tagcolor" style="color:mediumblue"><</span>/p<span class="tagcolor" style="color:mediumblue">></span></span> </div> <a target="_blank" href="tryit.asp?filename=tryhtml_poem" class="w3-btn w3-margin-bottom">Try it Yourself »</a> </div> <hr> <h2>Related Pages</h2> <p>HTML tutorial: <a href="/html/html_paragraphs.asp">HTML Paragraphs</a></p> <p>HTML DOM reference: <a href="/jsref/dom_obj_paragraph.asp">Paragraph Object</a></p> <hr> <h2>Default CSS Settings</h2> <p>Most browsers will display the <code class="w3-codespan"><p></code> element with the following default values:</p> <div class="w3-example"> <h3>Example</h3> <div class="w3-code notranslate cssHigh"><span class="cssselectorcolor" style="color:brown"> p <span class="cssdelimitercolor" style="color:black">{</span><span class="csspropertycolor" style="color:red"><br> display<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> block<span class="cssdelimitercolor" style="color:black">;</span></span><br> margin-top<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> 1em<span class="cssdelimitercolor" style="color:black">;</span></span><br> margin-bottom<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> 1em<span class="cssdelimitercolor" style="color:black">;</span></span><br> margin-left<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> 0<span class="cssdelimitercolor" style="color:black">;</span></span><br> margin-right<span class="csspropertyvaluecolor" style="color:mediumblue"><span class="cssdelimitercolor" style="color:black">:</span> 0<span class="cssdelimitercolor" style="color:black">;</span></span><br></span><span class="cssdelimitercolor" style="color:black">}</span> </span></div> <a target="_blank" href="tryit.asp?filename=tryhtml_p_default_css" class="w3-btn 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