Just noticeable difference for machine perception and generation of regularized adversarial images with minimal perturbation

In this study, we introduce a measure for machine perception, inspired by the concept of Just Noticeable Difference (JND) of human perception. Based on this measure, we suggest an adversarial image generation algorithm, which iteratively distorts an image by an additive noise until the model detects the change in the image by outputting a false label. The noise added to the original image is defined as the gradient of the cost function of the model. A novel cost function is defined to explicitly minimize the amount of perturbation applied to the input image while enforcing the perceptual similarity between the adversarial and input images. For this purpose, the cost function is regularized by the well-known total variation and bounded range terms to meet the natural appearance of the adversarial image. We evaluate the adversarial images generated by our algorithm both qualitatively and quantitatively on CIFAR10, ImageNet, and MS COCO datasets. Our experiments on image classification and object detection tasks show that adversarial images generated by our JND method are both more successful in deceiving the recognition/detection models and less perturbed compared to the images generated by the state-of-the-art methods, namely, FGV, FSGM, and DeepFool methods.


Indirect Relationship between Egoistic Relative Deprivation and Subjective Well-Being
ÖZDEMİR, FATİH; Tekes, Burcu; Öner Özkan, Bengi (2019-01-01)
The present study investigates the possible variables that explain subjective well-being based on Relative Deprivation Theory. In this regard, the first purpose of the study is to focus on the qualitative characteristic of the desired outcome and examine whether the types of material and emotional egoistic relative deprivation exhibit a differentiated relationship with subjective well-being. The second purpose is to test the possible mediating role of perceived intrinsic strength and perceived extrinsic str...
Evaluation of visual quality metrics
Ölgün, Ramazan Ferhat; Akar, Gözde; Department of Electrical and Electronics Engineering (2011)
The aim of this study is to work on the visual quality metrics that are widely accepted in literature, to evaluate them on different distortion types and to give a comparison of overall performances in terms of prediction accuracy, monotonicity, consistency and complexity. The algorithms behind the quality metrics in literature and parameters used for quality metric performance evaluations are studied. This thesis also includes the explanation of Human Visual System, classification of visual quality metrics...
Ongoing mechanism in the tactile communication between children and adults in picture storybooks for 4-to-6-yearolds
Eryiğit, Sümeyra; Olgan, Refika; Department of Early Childhood Education (2017)
The purpose of this study is to investigate the characteristics of meaning categories for individual touches in picture storybooks for 4-to-6-year-olds and related contextual factors and descriptive features. The sample of the study involves 489 picture storybooks for 4-to-6-year-olds. Qualitative analysis and inferential statistics were conducted. Ali Dayı Children Library in Ankara was chosen as the site to collect data, which required three weeks. Data was collected through a codebook, which was develope...
Experimental results on adaptive output feedback control using a laboratory model helicopter
Kutay, Ali Türker; Idan, M; Hovakimyan, N (Institute of Electrical and Electronics Engineers (IEEE), 2005-03-01)
Experimental results are presented that illustrate a recently developed method for adaptive output feedback control. The method permits adaptation to both parametric uncertainty and unmodeled dynamics, and incorporates a novel approach that permits adaptation under known actuator characteristics including actuator dynamics and saturation. Only knowledge of the relative degree of the controlled system within the bandwidth of the control design is required. The controller design was tested by controlling the ...
Rethinking diaspora as heterotopia in works of Anita Deasi, Kamala Markandaya and Meera Syal
Okuroğlu Özün, Şule; Sönmez, Margaret Jeanne M.; Department of English Literature (2013)
The aim of this study is to offer an insight into discussions of spatiotemporal dimensions of diasporic subjectivity by making use of Foucauldian heterotopia, heterochrony, power and self technologies. This study analyses diasporic subjectification in Bye-Bye Blackbird by Anita Desai, The Nowhere Man by Kamala Markandaya, and Anita and Me by Meera Syal from the conceptual perspective of Michel Foucault’s heterotopia. After a thorough discussion, considerations of the roots of diaspora, heterotopic diaspora ...
Citation Formats
A. K. Akan, E. Akbaş, and F. T. Yarman Vural, “Just noticeable difference for machine perception and generation of regularized adversarial images with minimal perturbation,” SIGNAL IMAGE AND VIDEO PROCESSING, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/95365.