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(1 - 4 of 4)
- Title
- THE DARK SIDE: STUDY OF THE ROLE OF SKIN TONE ON CONSUMER PERCEPTION.
- Creator
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Sablon, Kelcey, McConnell, Daniel, University of Central Florida
- Abstract / Description
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The intent of this thesis is to explore the effects and influencers of skin tone on consumer perception. Firstly we conducted a primary study to test the effects of skin tone on service provider quality. The results showed that while skin tone had little effect, gender and ethnicity were more indicative. Therefore our study seeks to re-test the relationship between skin tone and consumer service perception as well as the effects of ethnicity and tipping behavior, and if a consumer's cultural...
Show moreThe intent of this thesis is to explore the effects and influencers of skin tone on consumer perception. Firstly we conducted a primary study to test the effects of skin tone on service provider quality. The results showed that while skin tone had little effect, gender and ethnicity were more indicative. Therefore our study seeks to re-test the relationship between skin tone and consumer service perception as well as the effects of ethnicity and tipping behavior, and if a consumer's cultural identity strength plays a role in consumer perception. We examined the differences across ethnicities i.e. White, Hispanic, and African American. Specifically we were interested in any potential differences across skin tone (light skinned vs. dark skinned) within African American and Hispanic service providers. Firstly we sought out stock images that portrayed easily identifiable ethnicities. We exposed the respondents to those images in which we asked them to identify the ethnicity of the image as a manipulation check for ethnicity. In the actual study, all respondents were given the same service scenario with the image of one of the ten (White, light or dark skinned Hispanic, light or dark skinned African American, male or female) stock photos. Respondents were asked to rate the service quality, satisfaction, and tip amount. The data was analyzed as a 2 way independent-groups design.
Show less - Date Issued
- 2014
- Identifier
- CFH0004603, ucf:45307
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004603
- Title
- OPTIMIZING THE HIGH DYNAMIC RANGE IMAGING PIPELINE.
- Creator
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Akyuz, Ahmet, Reinhard, Erik, University of Central Florida
- Abstract / Description
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High dynamic range (HDR) imaging is a rapidly growing field in computer graphics and image processing. It allows capture, storage, processing, and display of photographic information within a scene-referred framework. The HDR imaging pipeline consists of the major steps an HDR image is expected to go through from capture to display. It involves various techniques to create HDR images, pixel encodings and file formats for storage, tone mapping for display on conventional display devices and...
Show moreHigh dynamic range (HDR) imaging is a rapidly growing field in computer graphics and image processing. It allows capture, storage, processing, and display of photographic information within a scene-referred framework. The HDR imaging pipeline consists of the major steps an HDR image is expected to go through from capture to display. It involves various techniques to create HDR images, pixel encodings and file formats for storage, tone mapping for display on conventional display devices and direct display on HDR capable screens. Each of these stages have important open problems, which need to be addressed for a smoother transition to an HDR imaging pipeline. We addressed some of these important problems such as noise reduction in HDR imagery, preservation of color appearance, validation of tone mapping operators, and image display on HDR monitors. The aim of this thesis is thus, to present our findings and describe the research we have conducted within the framework of optimizing the HDR imaging pipeline.
Show less - Date Issued
- 2007
- Identifier
- CFE0001875, ucf:47404
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001875
- Title
- COMPARING MEDIA COVERAGE OF THE GULF OIL SPILL IN THE US AND UK: IMPLICATIONS FOR GLOBAL CRISIS COMMUNICATION.
- Creator
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Crytzer, Sarah, Coombs, Timothy, University of Central Florida
- Abstract / Description
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The following research is a content analysis of 114 articles written by the American and British news media outlets in the first month following the BP Gulf oil spill in April 2010. The goal of the research was to identify any dominant frames evident in the reports and to compare the two countries to see if there was a difference in the dominant frames used. Positive, negative, and neutral tones were also evaluated to determine if there was a difference between the countries. The results show...
Show moreThe following research is a content analysis of 114 articles written by the American and British news media outlets in the first month following the BP Gulf oil spill in April 2010. The goal of the research was to identify any dominant frames evident in the reports and to compare the two countries to see if there was a difference in the dominant frames used. Positive, negative, and neutral tones were also evaluated to determine if there was a difference between the countries. The results show that both countries reports predominantly used an ecology and action frame, while British media outlets also used an economic frame. Both countries reported with primarily a negative and neutral tone. The implications of these findings for crisis communication managers are discussed.
Show less - Date Issued
- 2011
- Identifier
- CFE0003890, ucf:48743
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003890
- Title
- REAL-TIME REALISTIC RENDERING AND HIGH DYNAMIC RANGE IMAGE DISPLAY AND COMPRESSION.
- Creator
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Xu, Ruifeng, Pattanaik, Sumanta, University of Central Florida
- Abstract / Description
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This dissertation focuses on the many issues that arise from the visual rendering problem. Of primary consideration is light transport simulation, which is known to be computationally expensive. Monte Carlo methods represent a simple and general class of algorithms often used for light transport computation. Unfortunately, the images resulting from Monte Carlo approaches generally suffer from visually unacceptable noise artifacts. The result of any light transport simulation is, by its very...
Show moreThis dissertation focuses on the many issues that arise from the visual rendering problem. Of primary consideration is light transport simulation, which is known to be computationally expensive. Monte Carlo methods represent a simple and general class of algorithms often used for light transport computation. Unfortunately, the images resulting from Monte Carlo approaches generally suffer from visually unacceptable noise artifacts. The result of any light transport simulation is, by its very nature, an image of high dynamic range (HDR). This leads to the issues of the display of such images on conventional low dynamic range devices and the development of data compression algorithms to store and recover the corresponding large amounts of detail found in HDR images. This dissertation presents our contributions relevant to these issues. Our contributions to high dynamic range image processing include tone mapping and data compression algorithms. This research proposes and shows the efficacy of a novel level set based tone mapping method that preserves visual details in the display of high dynamic range images on low dynamic range display devices. The level set method is used to extract the high frequency information from HDR images. The details are then added to the range compressed low frequency information to reconstruct a visually accurate low dynamic range version of the image. Additional challenges associated with high dynamic range images include the requirements to reduce excessively large amounts of storage and transmission time. To alleviate these problems, this research presents two methods for efficient high dynamic range image data compression. One is based on the classical JPEG compression. It first converts the raw image into RGBE representation, and then sends the color base and common exponent to classical discrete cosine transform based compression and lossless compression, respectively. The other is based on the wavelet transformation. It first transforms the raw image data into the logarithmic domain, then quantizes the logarithmic data into the integer domain, and finally applies the wavelet based JPEG2000 encoder for entropy compression and bit stream truncation to meet the desired bit rate requirement. We believe that these and similar such contributions will make a wide application of high dynamic range images possible. The contributions to light transport simulation include Monte Carlo noise reduction, dynamic object rendering and complex scene rendering. Monte Carlo noise is an inescapable artifact in synthetic images rendered using stochastic algorithm. This dissertation proposes two noise reduction algorithms to obtain high quality synthetic images. The first one models the distribution of noise in the wavelet domain using a Laplacian function, and then suppresses the noise using a Bayesian method. The other extends the bilateral filtering method to reduce all types of Monte Carlo noise in a unified way. All our methods reduce Monte Carlo noise effectively. Rendering of dynamic objects adds more dimension to the expensive light transport simulation issue. This dissertation presents a pre-computation based method. It pre-computes the surface radiance for each basis lighting and animation key frame, and then renders the objects by synthesizing the pre-computed data in real-time. Realistic rendering of complex scenes is computationally expensive. This research proposes a novel 3D space subdivision method, which leads to a new rendering framework. The light is first distributed to each local region to form local light fields, which are then used to illuminate the local scenes. The method allows us to render complex scenes at interactive frame rates. Rendering has important applications in mixed reality. Consistent lighting and shadows between real scenes and virtual scenes are important features of visual integration. The dissertation proposes to render the virtual objects by irradiance rendering using live captured environmental lighting. This research also introduces a virtual shadow generation method that computes shadows cast by virtual objects to the real background. We finally conclude the dissertation by discussing a number of future directions for rendering research, and presenting our proposed approaches.
Show less - Date Issued
- 2005
- Identifier
- CFE0000730, ucf:46615
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000730
