Image recording device and image processing method therefor

An image recording device, comprising:

• a detecting module, comprising:
• a detecting unit configured to capture an original dynamic image according to an exposure value and output an image information of the original dynamic image;
• a data statistics unit connected with the detecting unit for receiving the image information of the original dynamic image, gathering the statistics of the image information of the original dynamic image and outputting the image information of the original dynamic image;
• and
• a tone adjusting unit connected with the detecting unit and comprising plural preset and different tone mapping adjusting curves, wherein the tone adjusting unit is configured to receive the image information of the original dynamic image, adjust the brightness of the original dynamic image to obtain an adjusted dynamic image according to one of the plural preset and different tone mapping adjusting curves and output the image information of the adjusted dynamic image;
• and
• an image signal output module, comprising:
• an auto exposure unit connected with the data statistics unit, the detecting unit and the tone adjusting unit, and comprising plural preset brightness intervals, wherein the auto exposure unit receives the image information of the original dynamic image transmitted from the data statistics unit and issues a first instruction to the detecting unit according to the image information of the original dynamic image, the detecting unit adjusts the exposure value according to the first instruction, the auto exposure unit compares and obtains a nearest brightness interval from the plural brightness intervals according to the image information of the original dynamic image and issues a second instruction to the tone adjusting unit according to the nearest brightness interval, and the tone adjusting unit chooses the corresponding tone mapping adjusting curve from the plural tone mapping adjusting curves to adjust the brightness of the original dynamic image according to the second instruction and outputs the image information of the adjusted dynamic image;
• and
• a dynamic contrast adjusting unit connected with the tone adjusting unit for receiving the image information of the adjusted dynamic image transmitted from the tone adjusting unit and outputting the adjusted dynamic image correspondingly.