Method and apparatus for adjusting light intensity based on content to achieve a uniform exposure

A non-transitory computer-readable medium storing a plurality of instructions which, when executed by a processor, cause the processor to perform operations for adjusting a light intensity of a printhead, the operations comprising:

• receiving an image comprising a plurality of pixels;
• calculating a correction factor for each one of a plurality of pixels of the image by applying a filter to each one of the plurality of pixels of the image and summing a contribution of the light intensity of each one of a plurality of surrounding pixels to a pixel being analyzed to calculate an overlap value and comparing the overlap value to a development threshold range;
• and
• adjusting the light intensity of a light source of the printhead in accordance with the correction factor of each one of the plurality of pixels of the image that require toner.

A method for adjusting a light intensity of a printhead, comprising:

• receiving, by a processor, an image comprising a plurality of lines, each one of the plurality of lines comprising a plurality of pixels, wherein each one of the plurality of pixels correspond to an LED of a plurality of LEDs of the LED printhead;
• calculating, by the processor, an overlap value for each one of a plurality of pixels of the image by applying a Gaussian filter to each one of all pixels of the image and summing a contribution of the light intensity of each one of a plurality of surrounding pixels to a pixel being analyzed;
• calculating, by the processor, a correction factor based on a comparison of the overlap value to a development threshold range;
• providing, by the processor, the correction factor for each one of the plurality of pixels of a current line of the plurality of lines to the LED printhead;
• adjusting, by the processor, a power of each one of one or more LEDs of the plurality of LEDs in accordance with the correction factor to adjust the light intensity of the each one of the one or more LEDs that correspond to a respective one of the plurality of pixels that require toner of the current line;
• and
• repeating, by the processor, the providing and the adjusting for each line of the plurality of lines of the image.