The spatial working memory system constantly updates spatial representations and many studies have focused on the underlying principles of the encoding and maintenance of visual information. Here we investigated the question of how the production of actions influences spatial working memory. Participants were given a task that required concurrent maintenance of two spatial arrays, one encoded b...

Systems models hold working memory to depend on specialized, domain-specific storage buffers. Here, however, we demonstrate that short-term retention of the identity or location of visually presented stimuli is disrupted by nonvisual secondary tasks performed in the dark-passive listening to nouns or endogenous generation of saccades, respectively. This indicates that the short-term retention o...

stract-The retina’s visual message is transmitted to the brain ganglion cells that integrate noisy synaptic inputs to create a ike train. We asked how efficiently the retinal ganglion cell ike generator creates the spike train message. Intracellular d extracellular recordings were made from in vitro guinea pig tina, in response to a spot of light flashed over the receptive ld center. Responses ...

The retina’s visual message is transmitted to the brain by ganglion cells that integrate noisy synaptic inputs to create a spike train. We asked how efficiently the retinal ganglion cell spike generator creates the spike train message. Intracellular and extracellular recordings were made from in vitro guinea pig retina, in response to a spot of light flashed over the receptive field center. Res...

A form of visual jam resistant coding is presented. Using Visual BBC, a modified form of BBC (Baird, Bahn, Collins) coding, it is shown that several images can be printed on clear plastic, such that when they are superimposed (i.e., a bitwise OR of the pixels is performed), the resulting image may look random, but the original images can still be recovered without any information about the orig...

Many models of visual processing assume that visual information is analyzed into separable and independent neural codes, or features. A common psychophysical test of independent features is known as a summation study, which measures performance in a detection, discrimination, or visual search task as the number of proposed features increases. Improvement in human performance with increasing num...

In recent studies it has been shown that temporal predictability of expected events alters processing in perception and action. Yet, the neural mechanism(s) by which temporal predictability biases this processing is to date little understood. Therefore, in the present fMRI study we investigated how temporal predictability affects neural processing in visual cortical areas. For this, thirty-four...

Recently, the coding of local features (e.g. SIFT) for image categorization tasks has been extensively studied. Incorporated within the Bag of Words (BoW) framework, these techniques optimize the projection of local features into the visual codebook, leading to state-of-theart performances in many benchmark datasets. In this work, we propose a novel visual codebook learning approach using the r...

Beküldte Németh Gábor 2. cs, 2015-06-25 17:10 Bodnár P [1], Nyúl LG [2]. Localization of Visual Codes using Fuzzy Inference System [3]. In: Braz J [4], Battiato S [5], Imai F [6], editors. International Conference on Computer Vision Theory and Applications (VISAPP). Berlin, Germany: SciTePress; 2015. 3. p. 345-352p. Doktori iskola elfogadás: igen Válogatott publikáció: igen Tanszék: Képfeldolgo...

Inthispaper,anovelvisualsecretsharing(VSS)schemeusingQRcodesisinvestigated.Theproposed visualsecretsharingschemebasedonQRcodes(VSSQR)canvisuallyrevealsecretimagebystacking sufficient(shadowimages)sharesaswellasscantheQRcodebyaQRcodereader.OurVSSQR exploitstheerrorcorrectionmechanismintheQRcodestructure,toembedthebitscorresponding ...