How to calculate the image file size given:
Image width (in pixel): 70/ 300/ 640 &
Width to height aspect ratio. Ex: 1.5
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Ram
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1I answered but please give a litlle more details. And also show w some effort – Gilad May 08 '14 at 20:33
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In order to calculate image size you need to say which format. Some formats have headers which are a few bytes and some are a few kb. there are also headerless images some of the (*.Raw). Next you need to know how many bits or bytes per pixel. Each color can be represented in different bits accurate.
Then you do header + (width *height *bytes per pixel) . This is what you basically want to do.
Gilad
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3@Ram, it is absolutely impossible to calculate this for a JPG, since JPEG is a lossy compression format. The file size will depend on the image composition and the amount of compression (JPEG quality). – Sparky May 08 '14 at 20:36