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3D printing uses fused plastics and composite filaments to layer components. This method produces parts for household tasks, industrial applications, and rapid prototyping. Developing a printing model requires determining extruder speed, extrusion height, and bed temperature (slicing). Poorly defined parameters can result in poor dimension precision, surface integrity, mechanical properties, and finally printing flaws in plastic and composite sections, limiting or prohibiting their use. During the first stage of 3D printing, a component's first layer is created. This chapter primarily reviews research on the use of image processing methods at different phases of the fused modeling process. Additionally, a review of the broad literature on the junction of FDM and image processing has been presented. The advantages and disadvantages of image processing for the FDM process, as well as existing barriers, have been discussed.

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