Conditional Adversarial Camera Model Anonymization

The model of camera that was used to capture a particular photographic image (model attribution) is typically inferred from high-frequency model-specific artifacts present within the image. Model anonymization is the process of transforming these artifacts such that the apparent capture model is changed. We propose a conditional adversarial approach for learning such transformations. In contrast to previous works, we cast model anonymization as the process of transforming both high and low spatial frequency information. We augment the objective with the loss from a pre-trained dual-stream model attribution classifier, which constrains the generative network to transform the full range of artifacts. Quantitative comparisons demonstrate the efficacy of our framework in a restrictive non-interactive black-box setting.Comment: ECCV 2020 - Advances in Image Manipulation workshop (AIM 2020

Comparison of photoreceptor outer segment length in diabetic and idiopathic epiretinal membranes.

PURPOSE: Idiopathic and diabetic epiretinal membranes (ERMs) differ significantly in terms of macular morphology. Our aim was to compare the photoreceptor outer segment (PROS) length in diabetic and idiopathic ERMs before and after surgery. METHODS: Fifty-two eyes of 50 patients who underwent pars plana vitrectomy (PPV) due to idiopathic and diabetic ERMs were included in this retrospective case series. All of the patients underwent ERM and internal limiting membrane (ILM) removal. The patients had been followed up 6 months postoperatively. Spectral-domain optical coherence tomography (OCT) was used to measure the PROS length, overall PR length and central foveal thickness (CFT). RESULTS: The PROS length, overall PR length, and CFT were statistically significantly lower at all the postoperative visits when compared to preoperative values in both the idiopathic and diabetic ERM groups (P0.05). There was no relation between amount of PROS length change and visual acuity gain in both groups (P>0.05). CONCLUSIONS: Postoperative change of PROS length was similar in idiopathic and diabetic ERMs. PROS length change may not be an indicator of postoperative visual acuity

Ocular side effects associated with systemic isotretinoin

Purpose. To evaluate ocular side effects associated with systemic isotretinoin. Patients and Method. Thirty-five patients with severe recalcitrant acne were enrolled in this prospective study. Isotretinoin was administered at a dose of 0.5-1 mg/kg/day in two divided doses with food for 16 weeks. In all patients, visual acuity, anterior segment examination, intraocular pressure (IOP) measurement, Schirmer I test, tear film break-up time (BUT), and color vision by Famsworth-Munsell (FM) 100 Hue color test were evaluated and microbiological investigation of conjunctival flora and anterior nares were performed. All these eye examinations were repeated before, during, and after treatment with isotretinoin by the same examiner. Results. There was no difference in visual acuity, and fundus examination in any of the cases after administration of the drug. No statistically significant difference was found between averages of IOP measurements and refraction (NS). On the other hand, the differences between FM 100 Hue test scores, Schirmer values, and BUT measurements that were evaluated before and during treatment were statistically significant (p < 0.05). Subjective symptoms such as dryness, itching, and contact lens intolerance occurred in 34% of the patients. Colonization of the conjunctiva and anterior nares by Staphylococcus increased significantly during treatment. All abnormal findings disappeared I month after stopping therapy. Conclusion. There are ocular side effects of isotretinoin that are treatable and they disappear after discontinuation of therapy