Turi Create中的guide for Object Detection并没有涵盖数据的设置,包括如何附加“注解”类别。
我所做的是创建一个单独的annotations文件,如下所示:
{
"1.jpg": {
"type": "rectangle",
"coordinates": {
"height": 97,
"width": 243,
"x": 4224,
"y": 1821
},
"label": "cw"
}然后我使用load_images设置我的数据,并使用这个文件:
# Load images
data = tc.image_analysis.load_images('train', with_path=True)
# Open annotations file as dict
annotations = eval(open("annotations").read())
# Add annotations column to SFrame, using the annotations dict key with the same name as the file name
data["annotations"] = data["path"].apply(lambda path: bounds[os.path.split(path)[1]])这很好用,如果我打印data,我会得到这样的结果:
+-------------------------------+---------------------------+
| path | image |
+-------------------------------+---------------------------+
| /Users/Andrew/Code/turi/cw... | Height: 3816 Width: 11056 |
| /Users/Andrew/Code/turi/cw... | Height: 3888 Width: 10672 |
| /Users/Andrew/Code/turi/cw... | Height: 3656 Width: 9700 |
| /Users/Andrew/Code/turi/cw... | Height: 3872 Width: 8280 |
+-------------------------------+---------------------------+
+-------------------------------+
| annotations |
+-------------------------------+
| {'type': 'rectangle', 'coo... |
| {'type': 'rectangle', 'coo... |
| {'type': 'rectangle', 'coo... |
| {'type': 'rectangle', 'coo... |
+-------------------------------+我不知道为什么它在控制台中被分成两行--可能只是因为大小的原因。
然后,我来到了Object Detection指南中的这一行,它打算可视化应用于数据的注释:
tc.object_detector.util.draw_bounding_boxes(data["image"], data["annotations"])当我运行此命令时,我在控制台中收到以下错误:
Traceback (most recent call last):
File "app.py", line 62, in <module>
load_data(bounds)
File "app.py", line 23, in load_data
tc.object_detector.util.draw_bounding_boxes(data["image"], data["annotations"])
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/toolkits/object_detector/util/_visualization.py", line 139, in draw_bounding_boxes
.apply(draw_single_image))
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/data_structures/sframe.py", line 2463, in apply
dryrun = [fn(row) for row in test_sf]
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/toolkits/object_detector/util/_visualization.py", line 124, in draw_single_image
_annotate_image(pil_img, anns, confidence_threshold=confidence_threshold)
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/toolkits/object_detector/util/_visualization.py", line 49, in _annotate_image
for ann in reversed(anns):
TypeError: argument to reversed() must be a sequence此外,如果我将其注释掉,然后继续执行以下操作:
model = tc.object_detector.create(data, feature="image", annotations="annotations")我得到了错误:
Traceback (most recent call last):
File "app.py", line 65, in <module>
learn()
File "app.py", line 37, in learn
model = tc.object_detector.create(data, feature="image", annotations="annotations")
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/toolkits/object_detector/object_detector.py", line 170, in create
require_annotations=True)
File "/Users/Andrew/turi/lib/python2.7/site-packages/turicreate/toolkits/object_detector/object_detector.py", line 66, in _raise_error_if_not_detection_sframe
raise _ToolkitError("Annotations column must contain lists")
turicreate.toolkits._main.ToolkitError: Annotations column must contain lists大概我错误地设置了我的注释栏,使其不符合预期。
发布于 2017-12-28 15:30:22
annotations列缺少左括号和右括号。如果您查看本教程中的可视化输出,您将看到每个注释的开头都有一个左括号(...and可能在末尾有一个右括号)。
目前还不太确定该如何解决这个问题。但当我得到解决方案时,我会尝试发布。
发布于 2020-07-05 20:55:21
有点晚了,但我最近遇到了这个问题,或者至少是同样的错误报告。当你得到像这样的东西:
turicreate.toolkits._main.ToolkitError: Annotations column must contain lists 试一试
annotations.column_types() or data.column_types()您很可能会看到类似这样的内容
str, image, str而不是所需的
str, image, list而问题将是一个格式错误的字符串,因此Python解析器会断定。在我的例子中,缺陷只是在每一行的闭方括号后有一个额外的空格。修复它,重新运行column_types来验证列表处理是否正确,然后继续前进到下一个障碍!
https://stackoverflow.com/questions/47795909
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