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@@ -105,11 +105,9 @@
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]
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},
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{
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- "cell_type": "code",
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- "execution_count": 16,
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- "id": "7ceb6a7b-2072-4b9b-9874-4c7faec07afe",
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+ "cell_type": "markdown",
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+ "id": "cad2c161-aac5-480a-97ab-53422e37a04e",
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"metadata": {},
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- "outputs": [],
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"source": [
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"# 2.图像的属性"
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]
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@@ -120,6 +118,53 @@
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"id": "9e93da9e-6b85-4483-919e-b1d3a89bb2b7",
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"metadata": {},
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"outputs": [],
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+ "source": [
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+ "#打开"
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+ ]
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+ },
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+ {
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+ "cell_type": "markdown",
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+ "id": "0592b3dc-3485-4430-b93f-0e975984198d",
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+ "metadata": {},
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+ "source": [
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+ "#3. 图像的像素与通道"
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+ ]
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+ },
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+ {
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+ "cell_type": "code",
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+ "execution_count": 22,
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+ "id": "c6e3b010-0f7d-427f-88c8-aade9016eab9",
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+ "metadata": {},
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+ "outputs": [
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+ {
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+ "ename": "TypeError",
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+ "evalue": "'NoneType' object is not subscriptable",
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+ "output_type": "error",
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+ "traceback": [
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+ "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
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+ "\u001b[1;31mTypeError\u001b[0m Traceback (most recent call last)",
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+ "Cell \u001b[1;32mIn[22], line 8\u001b[0m\n\u001b[0;32m 5\u001b[0m img\u001b[38;5;241m=\u001b[39mcv2\u001b[38;5;241m.\u001b[39mimread(\u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mgpu.bmp\u001b[39m\u001b[38;5;124m\"\u001b[39m)\n\u001b[0;32m 7\u001b[0m \u001b[38;5;66;03m#print(img[0][0][0])\u001b[39;00m\n\u001b[1;32m----> 8\u001b[0m \u001b[38;5;28mprint\u001b[39m(\u001b[43mimg\u001b[49m\u001b[43m[\u001b[49m\u001b[38;5;241;43m0\u001b[39;49m\u001b[43m,\u001b[49m\u001b[38;5;241;43m0\u001b[39;49m\u001b[43m,\u001b[49m\u001b[38;5;241;43m0\u001b[39;49m\u001b[43m]\u001b[49m)\n",
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+ "\u001b[1;31mTypeError\u001b[0m: 'NoneType' object is not subscriptable"
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+ ]
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+ }
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+ ],
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+ "source": [
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+ "# bmp:位图（原始存放像素）：图像大，不适合网络，图像保真度高\n",
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+ "# jpg 压缩存放：RGB，图像大小合适，主流的网路图片格式\n",
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+ "# png 高压缩RGBA,有透明度\n",
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+ "# gif 动图\n",
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+ "img=cv2.imread(\"gpu.bmp\")\n",
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+ "\n",
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+ "#print(img[0][0][0])\n",
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+ "print(img[0,0,0])\n"
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+ ]
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+ },
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+ {
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+ "cell_type": "code",
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+ "execution_count": null,
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+ "id": "0c5170d5-0759-41fb-ad25-acf659c5d2c9",
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+ "metadata": {},
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+ "outputs": [],
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"source": []
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}
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],
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unknown