1. An image capturing device, comprising: an image capturing module capturing a plurality of temporary images corresponding to a scene; and a processing module sequentially analyzing the temporary images by controlling an image analysis module to analyze a motion blur or sampling quantization error of each of the temporary images to correspondingly generate a plurality of analysis results, dynamically and sequentially adjusting sampling time of each temporary image captured by the image capturing module according to each of the analysis results, selecting some of the plurality of temporary images according to the analysis results, integrating the selected temporary images, and stopping capturing the temporary images based upon a stop signal to generate a storage image; wherein each of the analysis results is generated on one of the temporary images and is a weight measurement value of the one of the temporary images, the processing module dynamically adjusts the sampling time of the latter one temporary image according to the weight measurement value of the one of the temporary images and selects and integrates the temporary images according to the weight measurement value utilized in adjusting the sampling time of the latter one temporary image of the one of the temporary images; wherein the sampling time of the latter one temporary image in each of temporary images is reduced when the motion blur and sampling measurement error of the previous one of the temporary image in each of temporary images is not in a predetermined range, and the sampling time of the latter one temporary image in each of temporary images is lengthen when the motion blur or sampling measurement error of the previous one of the temporary image in each of temporary images is in the predetermined range.