File size: 17,340 Bytes
a74fca5
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
<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 maskBtn = document.querySelector("#mask-btn");
      const undoBtn = document.querySelector("#undo-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 = "";
      let pointArr = [];
      let bgPointMode = false;
      //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 mask button
      maskBtn.addEventListener("click", () => {
        togglePointMode();
      });
      //add event listener to clear button
      clearBtn.addEventListener("click", () => {
        cleanImageCanvas();
        togglePointMode(false);
        pointArr = [];
      });
      //add event listener to undo button
      undoBtn.addEventListener("click", () => {
        undoPoint();
      });
      //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;
        pointArr = [...pointArr, [x, y, !bgPointMode]];
        undoBtn.disabled = false;
        const { maskURL } = await getSegmentationMask(pointArr);
        isSegmenting = false;
        drawMask(maskURL);
      });
      async function undoPoint() {
        if (!hasImage || isEmbedding || isSegmenting) {
          return;
        }
        if (pointArr.length === 0) {
          return;
        }
        pointArr.pop();
        if (pointArr.length === 0) {
          ctxMask.clearRect(0, 0, canvas.width, canvas.height);
          undoBtn.disabled = true;
          return;
        }
        isSegmenting = true;
        const { maskURL } = await getSegmentationMask(pointArr);
        isSegmenting = false;
        drawMask(maskURL);
      }
      function togglePointMode(mode) {
        bgPointMode = mode ? mode : !bgPointMode;

        maskBtn.querySelector("span").innerText = bgPointMode
          ? "Background Point"
          : "Mask Point";
        if (bgPointMode) {
          maskBtn.querySelector("#mask-circle").setAttribute("hidden", "");
          maskBtn.querySelector("#unmask-circle").removeAttribute("hidden");
        } else {
          maskBtn.querySelector("#mask-circle").removeAttribute("hidden");
          maskBtn.querySelector("#unmask-circle").setAttribute("hidden", "");
        }
      }

      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.disabled = true;
        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.disabled = false;
          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-2xl">
        <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>
          <div class="flex gap-2">
            <button
              id="mask-btn"
              title="Toggle Mask Point and Background Point"
              class="text-xs bg-white rounded-md disabled:opacity-50 flex gap-1 items-center">
              <span>Mask Point</span>
              <svg
                xmlns="http://www.w3.org/2000/svg"
                height="1em"
                viewBox="0 0 512 512">
                <path
                  id="mask-circle"
                  d="M256 512a256 256 0 1 0 0-512 256 256 0 1 0 0 512z" />
                <path
                  id="unmask-circle"
                  hidden
                  d="M464 256a208 208 0 1 0-416 0 208 208 0 1 0 416 0zM0 256a256 256 0 1 1 512 0 256 256 0 1 1-512 0z" />
              </svg>
            </button>
            <button
              id="undo-btn"
              disabled
              title="Undo Last Point"
              class="text-xs bg-white rounded-md disabled:opacity-50 flex gap-1 items-center">
              <svg
                xmlns="http://www.w3.org/2000/svg"
                height="1em"
                viewBox="0 0 512 512">
                <path
                  d="M48.5 224H40a24 24 0 0 1-24-24V72a24 24 0 0 1 41-17l41.6 41.6a224 224 0 1 1-1 317.8 32 32 0 0 1 45.3-45.3 160 160 0 1 0 1-227.3L185 183a24 24 0 0 1-17 41H48.5z" />
              </svg>
            </button>

            <button
              id="clear-btn"
              disabled
              title="Clear Image"
              class="text-xs bg-white rounded-md disabled:opacity-50 flex gap-1 items-center">
              <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>
            </button>
          </div>
        </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>