earticle

영어

A thermal infrared images obtained by a FLIR infrared cameras can be used to inspect the malfunction or energy strength of warmth in a location. However, generally the resolution of thermal infrared images is smaller than that of optical images, image enlargement approach is requested. In this paper, we studied on filter design algorithm for image upsampling and horizontally, vertically, or horizontally-vertically. Through the training process, the most appropriate filter coefficients are assigned to achieve a better performance. In a comparison with different sized filters and existing upsampler, it is clearly seen that bigger filter outperforms all other smaller filters in terms of both objective and visual quality.