Method for Rotating An Image and Digital Cameras Using The Same

A digital camera comprising:

• a processor;
• a memory electrically coupled with the processor, wherein the memory stores a program;
• an image capture module electrically coupled with the processor, wherein the image capture module is used for capturing a original image;
• and
• an edit interface for a user to input a plurality of instructions to command the processor to execute the program to achieve the mechanism described below, wherein the plurality of instructions comprises a rotate initial instruction and at least a rotating instruction:
• when the user inputs the rotate initial instruction, the processor determines whether to auto-rotate the original image;
• if yes, calculating a slope angle of the original image to rotate a first specific angle, wherein the slope angle is substantially equal to the first specific angle;
• if not, rotating the original image with a second specific angle according to the rotating instruction inputted by the user;
• and
• forming a rotated image.