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Record W4291971 · doi:10.1139/o67-079

Development of Noise Suppression Schemes in Images

2013· dissertation· en· W4291971 on OpenAlex
Sarmila Padhy

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

venuePublished in a venue whose home country is Canada.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueCanadian Journal of Biochemistry · 2013
Typedissertation
Languageen
FieldComputer Science
TopicImage and Signal Denoising Methods
Canadian institutionsnot available
Fundersnot available
KeywordsImpulse noiseGaussian noiseSalt-and-pepper noiseValue noiseMedian filterNoise (video)Gradient noisePixelArtificial intelligenceComputer scienceNoise reductionGaussianWeightingNoise measurementAlgorithmImage noisePattern recognition (psychology)MathematicsComputer visionImage (mathematics)Image processing

Abstract

fetched live from OpenAlex

Noise suppression from images is one of the most important concerns in digital image processing. Two important noise models are considered in this thesis i.e. random valued impulse noise and Gaussian noise and two propositions have been made to suppress these noises. The first scheme is detection based filtering which uses the Bayes classification technique to detect the noisy pixels. The detected noisy pixels are then filtered out using a weighted median filtering. In another scheme an attempt has been made to improve the existing spatially adaptive denoising algorithm for suppression of Gaussian noise. The proposed scheme uses uniform weighting coefficients and utilizes local statistics parameters to detect as well as to filter the noisy pixels. The suggested scheme gives good results for high level Gaussian noise. Extensive simulations on standard images are carried out to show the efficiency of the proposed schemes along with other state of the art techniques under similar environment. Subjective as well as objective performance comparisons show the better noise suppression capability of the proposed algorithms than their counterparts.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.332
Threshold uncertainty score0.852

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.262
Teacher spread0.250 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it