DataAugmentation | Caffe Image Data Augmentation | Machine Learning library
kandi X-RAY | DataAugmentation Summary
kandi X-RAY | DataAugmentation Summary
Caffe Image Data Augmentation 此数据增强是针对利用原始图片进行训练(image_data_layer.cpp)的方式进行的。 实际应用时从下载官方caffe然后将caffe.proto、data_transformer.cpp、data_transformer.hpp替换掉原版caffe即可。 train_val.prototxt中transform_param的配置参考transform_param.txt,其中备注随机的参数推荐只对train做,不要对test\val数据做。.
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QUESTION
i'm a beginner in the argument. I have this problem: I have to classify the percentage of 2 class in each frame of a video. I created a small dataset with about 500 images (250 of each class), and a CNN with these layers:
...ANSWER
Answered 2020-Jul-16 at 16:53- Since, yours is a binary classification, go with sigmoid. Softmax is for multi-class (>2).
- It is always better to use transfer learning. Go with VGG16, ResNet, Inception and others.
- Yes, in case of small datasets, data augmentation helps a lot.
- You need to use one neuron in the last layer rather than 2. Since, in one neuron, if value is greater than 0.5, it will be considered as class 1 otherwise 0. If you want to stick with two neurons, then, for getting your answer, you should take
np.argmax
of the prediction, in the example you have given,pred = [9.999e-1 4.444e-5]
, the predicted class is 0, as pred[0] > pred[1].
QUESTION
My training images are downscaled versions of their associated HR image. Thus, the input and the output images aren't the same dimension. For now, I'm using a hand-crafted sample of 13 images, but eventually I would like to be able to use my 500-ish HR (high-resolution) images dataset. This dataset, however, does not have images of the same dimension, so I'm guessing I'll have to crop them in order to obtain a uniform dimension.
I currently have this code set up: it takes a bunch of 512x512x3
images and applies a few transformations to augment the data (flips). I thus obtain a basic set of 39 images in their HR form, and then I downscale them by a factor of 4, thus obtaining my trainset which consits of 39 images of dimension 128x128x3
.
ANSWER
Answered 2018-Sep-25 at 03:51Yes you can use keras preprocessing function. Below some snippets to help you...
QUESTION
I'm trying to resize a 1920X1080 and copy the grayscale onto a white background of size 128X32. But I'm getting this error:
...ANSWER
Answered 2019-Apr-07 at 06:45Typically, this problem occurs when you're trying to call something from numpy as a function()
instead of it's type[]
. For reference, see the accepted comment here why numpy.ndarray is object is not callable in my simple for python loop
To solve this issue, try changing some of the parenthesis to brackets on line 32, since parenthesis are for functions, and brackets are for data types. I think one of these combinations will work, but I could still be wrong.
cv2.imshow('Greyscale_Stretched', target['float32'])
cv2.imshow['Greyscale_Stretched', target('float32')]
cv2.imshow['Greyscale_Stretched', target['float32']]
Hope that helps.
QUESTION
i'm fairly new to python and openCV and i have been experimenting with some code that i found online. so thank you in advance for helping although im using the imshow() function defined in opencv im unable to display the image
...ANSWER
Answered 2019-Apr-03 at 16:02Just tested your code. You need to call the main()
function somewhere. Since you haven't done that, the function is not executed.
simply add main()
at the end of the code, and everything works.
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