Memory Error While Converting List To Numpy Array

I've got a total of around 7000 images from which I'm extracted HoG features. I then want to convert the list into an np array for further processing. But I get a memory error duri

Solution 1:

For RGB or RGBA images you need only 8 bits per value, and when using float you are alocating 64 bits per value. Try using np.uint8 instead:

img_hogs = np.array(tmp_hogs, dtype=np.uint8)