Perhaps you should try some spelling variations:
image preprocessing » image processing (Expand search), images processing (Expand search), data preprocessing (Expand search)
decrease image » decrease age (Expand search), decrease intimate (Expand search), decreases immune (Expand search)
the decrease » and decrease (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » not increase (Expand search), and decrease (Expand search), _ decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)
decreases » decreased (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decreases the decrease image preprocessing ) OR ( decrease to decrease NOT decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decreases the decrease image preprocessing ) OR ( decrease to decrease not decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreases the decrease image preprocessing ) OR ( decrease to decrease not decrease ))*.