Image capturing device and exposure time adjusting method thereof

An exposure time adjusting method applicable to an image capturing device, comprising the following steps:

• capturing a plurality of temporary images by an image capturing module;
• sensing a vibration state of the image capturing device and correspondingly providing a vibration information corresponding to each of the plurality of temporary images by a vibration sensor module;
• dynamically adjusting exposure times of the plurality of temporary images according to a photographic condition indicated by the vibration information by a processing module during a period of capturing the plurality of temporary images by the image capturing module, wherein the vibration information of one of the plurality of temporary images is utilized to determine the exposure time of next one of the plurality of temporary images;
• and
• integrating the plurality of temporary images by an image integrating module to generate a stored image,
• controlling the image integrating module to integrate pixels of the plurality of temporary images, which correspond to similar image objects, to generate the stored image by the processing module;
• and
• stopping integration of a certain temporary image by the image integrating module while the image integrating module determines that geometric conversion parameters of an image object between the certain temporary image and a selected reference temporary image exceeds an error threshold;
• and
• completing the integration between the reference temporary image and the rest of the plurality of temporary images other than the certain temporary image by the image integrating module.

An image capturing device, comprising:

• an image capturing module, capturing a corresponding image data based on a scene;
• a vibration sensor module, sensing a vibration state of the image capturing device and correspondingly providing a vibration information corresponding to each of a plurality of temporary images;
• and
• a processing module, controlling the image capturing module to continuously capture the plurality of temporary images and the processing module dynamically dividing the exposure time for each of the plurality of temporary images captured by the image capturing module and dynamically adjusting exposure times of the plurality of temporary images according to a photographic condition indicated by the vibration information during a period of capturing the plurality of temporary images by the image capturing module, wherein the vibration information of one of the plurality of temporary images is utilized to determine the exposure time of next one of the plurality of temporary images, and each of the plurality of temporary images being a clear image;
• furthermore, the processing module comprising a control module to determine a compensation value for vibrations in the plurality of temporary images;
• and
• an image integrating module, controlled by the processing module thereby integrating the plurality of temporary images based on the compensation value to generate a stored image,
• wherein the processing module controls the image integrating module to integrate pixels of the plurality of temporary images, which correspond to similar image objects, to generate the stored image, and
• when the image integrating module determines that geometric conversion parameters of an image object between a certain temporary image and a selected temporary image exceed an error threshold, the image integrating module stops integrating the certain temporary image and completes the integration between the selected temporary image and the rest of the plurality of temporary images other than the certain temporary image.