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26 lines
827 B
Python
26 lines
827 B
Python
# Python Program to find the resolution of a jpeg image without using external libraries
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def jpeg_res(filename):
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""""This function prints the resolution
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of the jpeg image file passed into it"""
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# open image for reading in binary mode
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with open(filename,'rb') as img_file:
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# height of image (in 2 bytes) is at 164th position
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img_file.seek(163)
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# read the 2 bytes
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a = img_file.read(2)
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# calculate height
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height = (a[0] << 8) + a[1]
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# next 2 bytes is width
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a = img_file.read(2)
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# calculate width
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width = (a[0] << 8) + a[1]
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print("The resolution of the image is",width,"x",height)
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jpeg_res("img1.jpg") |