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+<html>
+ <head>
+ <meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
+ <title>Candle Segment Anything Model (SAM) Rust/WASM</title>
+ </head>
+ <body></body>
+</html>
+
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="UTF-8" />
+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+ <style>
+ @import url("https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@200;300;400&family=Source+Sans+3:wght@100;200;300;400;500;600;700;800;900&display=swap");
+ html,
+ body {
+ font-family: "Source Sans 3", sans-serif;
+ }
+ </style>
+ <script src="https://cdn.tailwindcss.com"></script>
+ <script type="module">
+ // base url for image examples
+ const MODEL_BASEURL =
+ "https://huggingface.co/lmz/candle-sam/resolve/main/";
+
+ // models base url
+ const MODELS = {
+ sam_mobile_tiny: {
+ url: "mobile_sam-tiny-vitt.safetensors",
+ },
+ sam_base: {
+ url: "sam_vit_b_01ec64.safetensors",
+ },
+ };
+ const samWorker = new Worker("./samWorker.js", { type: "module" });
+
+ async function segmentPoints(
+ modelURL, // URL to the weights file
+ modelID, // model ID
+ imageURL, // URL to the image file
+ points // {x, y} points to prompt image
+ ) {
+ return new Promise((resolve, reject) => {
+ function messageHandler(event) {
+ console.log(event.data);
+ if ("status" in event.data) {
+ updateStatus(event.data);
+ }
+ if ("error" in event.data) {
+ samWorker.removeEventListener("message", messageHandler);
+ reject(new Error(event.data.error));
+ }
+ if (event.data.status === "complete-embedding") {
+ samWorker.removeEventListener("message", messageHandler);
+ resolve();
+ }
+ if (event.data.status === "complete") {
+ samWorker.removeEventListener("message", messageHandler);
+ resolve(event.data.output);
+ }
+ }
+ samWorker.addEventListener("message", messageHandler);
+ samWorker.postMessage({
+ modelURL,
+ modelID,
+ imageURL,
+ points,
+ });
+ });
+ }
+ function updateStatus(statusMessage) {
+ statusOutput.innerText = event.data.message;
+ }
+
+ const clearBtn = document.querySelector("#clear-btn");
+ const canvas = document.querySelector("#canvas");
+ const mask = document.querySelector("#mask");
+ const ctxCanvas = canvas.getContext("2d");
+ const ctxMask = mask.getContext("2d");
+ const fileUpload = document.querySelector("#file-upload");
+ const dropArea = document.querySelector("#drop-area");
+ const dropButtons = document.querySelector("#drop-buttons");
+ const imagesExamples = document.querySelector("#image-select");
+ const modelSelection = document.querySelector("#model");
+ const statusOutput = document.querySelector("#output-status");
+
+ //add event listener to file input
+ fileUpload.addEventListener("change", (e) => {
+ const target = e.target;
+ if (target.files.length > 0) {
+ const href = URL.createObjectURL(target.files[0]);
+ cleanImageCanvas();
+ drawImageCanvas(href);
+ setImageEmbeddings(href);
+ }
+ });
+ // add event listener to drop-area
+ dropArea.addEventListener("dragenter", (e) => {
+ e.preventDefault();
+ dropArea.classList.add("border-blue-700");
+ });
+ dropArea.addEventListener("dragleave", (e) => {
+ e.preventDefault();
+ dropArea.classList.remove("border-blue-700");
+ });
+ dropArea.addEventListener("dragover", (e) => {
+ e.preventDefault();
+ });
+ dropArea.addEventListener("drop", (e) => {
+ e.preventDefault();
+ dropArea.classList.remove("border-blue-700");
+ const url = e.dataTransfer.getData("text/uri-list");
+ const files = e.dataTransfer.files;
+
+ if (files.length > 0) {
+ const href = URL.createObjectURL(files[0]);
+ cleanImageCanvas();
+ drawImageCanvas(href);
+ setImageEmbeddings(href);
+ } else if (url) {
+ cleanImageCanvas();
+ drawImageCanvas(url);
+ setImageEmbeddings(url);
+ }
+ });
+
+ let hasImage = false;
+ let isSegmenting = false;
+ let isEmbedding = false;
+ let currentImageURL = "";
+ //add event listener to image examples
+ imagesExamples.addEventListener("click", (e) => {
+ if (isEmbedding || isSegmenting) {
+ return;
+ }
+ const target = e.target;
+ if (target.nodeName === "IMG") {
+ const href = target.src;
+ cleanImageCanvas();
+ drawImageCanvas(href);
+ setImageEmbeddings(href);
+ }
+ });
+ //add event listener to clear button
+ clearBtn.addEventListener("click", () => {
+ cleanImageCanvas();
+ });
+ //add click event to canvas
+ canvas.addEventListener("click", async (event) => {
+ if (!hasImage || isEmbedding || isSegmenting) {
+ return;
+ }
+ const targetBox = event.target.getBoundingClientRect();
+ const x = (event.clientX - targetBox.left) / targetBox.width;
+ const y = (event.clientY - targetBox.top) / targetBox.height;
+ isSegmenting = true;
+ const { maskURL } = await getSegmentationMask({ x, y });
+ isSegmenting = false;
+ drawMask(maskURL);
+ });
+
+ async function getSegmentationMask(points) {
+ const modelID = modelSelection.value;
+ const modelURL = MODEL_BASEURL + MODELS[modelID].url;
+ const imageURL = currentImageURL;
+ const { maskURL } = await segmentPoints(
+ modelURL,
+ modelID,
+ imageURL,
+ points
+ );
+ return { maskURL };
+ }
+ async function setImageEmbeddings(imageURL) {
+ if (isEmbedding) {
+ return;
+ }
+ canvas.classList.remove("cursor-pointer");
+ canvas.classList.add("cursor-wait");
+ clearBtn.disabled = true;
+ const modelID = modelSelection.value;
+ const modelURL = MODEL_BASEURL + MODELS[modelID].url;
+ isEmbedding = true;
+ await segmentPoints(modelURL, modelID, imageURL);
+ canvas.classList.remove("cursor-wait");
+ canvas.classList.add("cursor-pointer");
+ clearBtn.disabled = false;
+ isEmbedding = false;
+ currentImageURL = imageURL;
+ }
+
+ function cleanImageCanvas() {
+ ctxCanvas.clearRect(0, 0, canvas.width, canvas.height);
+ ctxMask.clearRect(0, 0, canvas.width, canvas.height);
+ hasImage = false;
+ isEmbedding = false;
+ isSegmenting = false;
+ currentImageURL = "";
+ clearBtn.classList.add("invisible");
+ canvas.parentElement.style.height = "auto";
+ dropButtons.classList.remove("invisible");
+ }
+ function drawMask(maskURL) {
+ if (!maskURL) {
+ throw new Error("No mask URL provided");
+ }
+
+ const img = new Image();
+ img.crossOrigin = "anonymous";
+
+ img.onload = () => {
+ mask.width = canvas.width;
+ mask.height = canvas.height;
+ ctxMask.drawImage(canvas, 0, 0);
+ ctxMask.globalCompositeOperation = "source-atop";
+ ctxMask.fillStyle = "rgba(255, 0, 0, 0.6)";
+ ctxMask.fillRect(0, 0, canvas.width, canvas.height);
+ ctxMask.globalCompositeOperation = "destination-in";
+ ctxMask.drawImage(img, 0, 0);
+ };
+ img.src = maskURL;
+ }
+ function drawImageCanvas(imgURL) {
+ if (!imgURL) {
+ throw new Error("No image URL provided");
+ }
+
+ ctxCanvas.clearRect(0, 0, canvas.width, canvas.height);
+ ctxCanvas.clearRect(0, 0, canvas.width, canvas.height);
+
+ const img = new Image();
+ img.crossOrigin = "anonymous";
+
+ img.onload = () => {
+ canvas.width = img.width;
+ canvas.height = img.height;
+ ctxCanvas.drawImage(img, 0, 0);
+ canvas.parentElement.style.height = canvas.offsetHeight + "px";
+ hasImage = true;
+ clearBtn.classList.remove("invisible");
+ dropButtons.classList.add("invisible");
+ };
+ img.src = imgURL;
+ }
+
+ const observer = new ResizeObserver((entries) => {
+ for (let entry of entries) {
+ if (entry.target === canvas) {
+ canvas.parentElement.style.height = canvas.offsetHeight + "px";
+ }
+ }
+ });
+ observer.observe(canvas);
+ </script>
+ </head>
+ <body class="container max-w-4xl mx-auto p-4">
+ <main class="grid grid-cols-1 gap-8 relative">
+ <span class="absolute text-5xl -ml-[1em]">🕯️</span>
+ <div>
+ <h1 class="text-5xl font-bold">Candle Segment Anything</h1>
+ <h2 class="text-2xl font-bold">Rust/WASM Demo</h2>
+ <p class="max-w-lg">
+ Zero-shot image segmentation with
+ <a
+ href="https://segment-anything.com"
+ class="underline hover:text-blue-500 hover:no-underline"
+ target="_blank"
+ >Segment Anything Model (SAM)</a
+ >
+ and
+ <a
+ href="https://github.com/ChaoningZhang/MobileSAM"
+ class="underline hover:text-blue-500 hover:no-underline"
+ target="_blank"
+ >MobileSAM </a
+ >. It runs in the browser with a WASM runtime built with
+ <a
+ href="https://github.com/huggingface/candle/"
+ target="_blank"
+ class="underline hover:text-blue-500 hover:no-underline"
+ >Candle
+ </a>
+ </p>
+ </div>
+ <div>
+ <label for="model" class="font-medium">Models Options: </label>
+ <select
+ id="model"
+ class="border-2 border-gray-500 rounded-md font-light"
+ >
+ <option value="sam_mobile_tiny" selected>
+ Mobile SAM Tiny (40.6 MB)
+ </option>
+ <option value="sam_base">SAM Base (375 MB)</option>
+ </select>
+ </div>
+ <div>
+ <p class="text-xs italic max-w-lg">
+ <b>Note:</b>
+ The model's first run may take a few seconds as it loads and caches
+ the model in the browser, and then creates the image embeddings. Any
+ subsequent clicks on points will be significantly faster.
+ </p>
+ </div>
+ <div class="relative max-w-lg">
+ <div class="flex justify-between items-center">
+ <div class="px-2 rounded-md inline text-xs">
+ <span id="output-status" class="m-auto font-light"></span>
+ </div>
+ <button
+ id="clear-btn"
+ class="text-xs bg-white rounded-md disabled:opacity-50 flex gap-1 items-center invisible"
+ >
+ <svg
+ class=""
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 13 12"
+ height="1em"
+ >
+ <path
+ d="M1.6.7 12 11.1M12 .7 1.6 11.1"
+ stroke="#2E3036"
+ stroke-width="2"
+ />
+ </svg>
+ Clear image
+ </button>
+ </div>
+ <div
+ id="drop-area"
+ class="flex flex-col items-center justify-center border-2 border-gray-300 border-dashed rounded-xl relative p-20 w-full overflow-hidden"
+ >
+ <div
+ id="drop-buttons"
+ class="flex flex-col items-center justify-center space-y-1 text-center relative z-10"
+ >
+ <svg
+ width="25"
+ height="25"
+ viewBox="0 0 25 25"
+ fill="none"
+ xmlns="http://www.w3.org/2000/svg"
+ >
+ <path
+ d="M3.5 24.3a3 3 0 0 1-1.9-.8c-.5-.5-.8-1.2-.8-1.9V2.9c0-.7.3-1.3.8-1.9.6-.5 1.2-.7 2-.7h18.6c.7 0 1.3.2 1.9.7.5.6.7 1.2.7 2v18.6c0 .7-.2 1.4-.7 1.9a3 3 0 0 1-2 .8H3.6Zm0-2.7h18.7V2.9H3.5v18.7Zm2.7-2.7h13.3c.3 0 .5 0 .6-.3v-.7l-3.7-5a.6.6 0 0 0-.6-.2c-.2 0-.4 0-.5.3l-3.5 4.6-2.4-3.3a.6.6 0 0 0-.6-.3c-.2 0-.4.1-.5.3l-2.7 3.6c-.1.2-.2.4 0 .7.1.2.3.3.6.3Z"
+ fill="#000"
+ />
+ </svg>
+ <div class="flex text-sm text-gray-600">
+ <label
+ for="file-upload"
+ class="relative cursor-pointer bg-white rounded-md font-medium text-blue-950 hover:text-blue-700"
+ >
+ <span>Drag and drop your image here</span>
+ <span class="block text-xs">or</span>
+ <span class="block text-xs">Click to upload</span>
+ </label>
+ </div>
+ <input
+ id="file-upload"
+ name="file-upload"
+ type="file"
+ class="sr-only"
+ />
+ </div>
+ <canvas id="canvas" class="absolute w-full"></canvas>
+ <canvas
+ id="mask"
+ class="pointer-events-none absolute w-full"
+ ></canvas>
+ </div>
+ <div class="text-right py-2">
+ <button
+ id="share-btn"
+ class="bg-white rounded-md hover:outline outline-orange-200 disabled:opacity-50 invisible"
+ >
+ <img
+ src="https://huggingface.co/datasets/huggingface/badges/raw/main/share-to-community-sm.svg"
+ />
+ </button>
+ </div>
+ </div>
+ <div>
+ <div
+ class="flex gap-3 items-center overflow-x-scroll"
+ id="image-select"
+ >
+ <h3 class="font-medium">Examples:</h3>
+
+ <img
+ src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/candle/examples/sf.jpg"
+ class="cursor-pointer w-24 h-24 object-cover"
+ />
+ <img
+ src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/candle/examples/bike.jpeg"
+ class="cursor-pointer w-24 h-24 object-cover"
+ />
+ <img
+ src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/candle/examples/000000000077.jpg"
+ class="cursor-pointer w-24 h-24 object-cover"
+ />
+ </div>
+ </div>
+ </main>
+ </body>
+</html>