RT info:eu-repo/semantics/article
T1 Low-cost oblique illumination: an image quality assessment
A1 Ruiz-Santaquiteria Alegre, Jesús
A1 Espinosa Aranda, José Luis
A1 Déniz Suárez, Óscar
A1 Sánchez Bueno, Carlos
A1 Borrego Ramos, María
A1 Blanco Lanza, Saúl
A1 Cristóbal Pérez, Gabriel
A1 Bueno García, María Gloria
A2 Ecologia
K1 Ecología. Medio ambiente
K1 Image quality metrics
K1 Illumination filters
K1 Oblique illumination
K1 Textural features
K1 Diatoms
AB We study the effectiveness of several low-cost oblique illumination filters to improve overall image quality, in comparison with standard bright field imaging. For this purpose, a dataset composed of 3360 diatom images belonging to 21 taxa was acquired. Subjective and objective image quality assessments were done. The subjective evaluation was performed by a group of diatom experts by psychophysical test where resolution, focus, and contrast were assessed. Moreover, some objective nonreference image quality metrics were applied to the same image dataset to complete the study, together with the calculation of several texture features to analyze the effect of these filters in terms of textural properties. Both image quality evaluation methods, subjective and objective, showed better results for images acquired using these illumination filters in compari-son with the no filtered image. These promising results confirm that this kind of illumination filters can be a practical way to improve the image quality, thanks to the simple and low cost of the design and manufacturing process.
PB SEPI
YR 2019
FD 2019-01-22
LK http://hdl.handle.net/10612/9319
UL http://hdl.handle.net/10612/9319
NO Journal of Biomedical Optics, 2018, vol. 23, n. 1
NO P. 1-14
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 30-abr-2024