The actual stage of research is the beginning of the second year of the PhD thesis. The duration of the thesis is three years. The first year has begun with the state of the art involving two main parts. The first one focused on medical aspects related to the development and staging of stomach cancer. The second part was oriented to the actual technology and image processing techniques which are used to help in the diagnosis of malignancies in the stomach. The review of the state of the art mainly focused on the study of multispectral imaging. An overview of the state of the art is presented in section 4. Then, a multispectral endoscope prototype has been developed; this system is described in section 5. It is based on the use of a filter wheel to modify the regular white light of a gastroendoscopic system. Afterwards, a set of image pre-processing techniques has been developed to improve the usability of the multispectral images obtained by the prototype. These techniques are also described in section 5. Finally, in section 6 are presented the future work and the expected outcome.
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