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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,291 papers · 148 categories

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100200299399 · Jun 202019922001200920182026
48 results for image mapping

SR-NAM maps low-res images to multiple high-res images realistically.

problem Mapping low-resolution images to multiple high-resolution images realistically.
method SR-NAM using Non-Adversarial Mapping (NAM) technique and a degradation model.
result Realistic degradation and down-sampling of high-resolution images.

Open and discrete maps with specific branch set images are equivalent to PL branched covers.

problem Understanding the equivalence of open and discrete maps and PL branched covers.
method Demonstrated that an open and discrete map f ⁣:SnoSnf \colon \mathbb{S}^n o \mathbb{S}^n with a specific branch set image is equivalent to a PL branched cover up to homeomorphism.
result Open and discrete maps with a specific branch set image are equivalent to PL branched covers.

We give some results concerning the smoothness of the image of a real-analytic submanifold in complex space under the action of a finite holomorphic mapping. For instance, if the submanifold is not contained in a proper complex subvariety, we give a necessary and sufficient condition guaranteeing that its image is smoo…

2006-03-09abs ↗pdf ↗

NAM maps images between domains without adversarial learning, achieving better quality and stability.

problem Translating images between domains without correspondences and adversarial learning.
method NAM separates generative modeling and cross-domain mapping, using a pre-trained target model.
result Higher quality and resolution image translations with simpler and more stable training.

New variational model preserves image contrasts and features using Weingarten map minimization.

problem Image reconstruction with preservation of contrasts and features.
method Variational model with L1L^1 norm of Weingarten map, ADMM algorithm, gradient descent.
result The proposed models preserve image contrasts and features efficiently.

SMAPGAN generates styled map tiles from remote sensing images.

problem Generating timely updated map tiles from remote sensing images is challenging.
method Semi-supervised GAN model with gradient loss and ESSI metric.
result SMAPGAN outperforms state-of-the-art methods in quality metrics and human perception.

The Gauss Image Measure uniquely identifies dual convex bodies up to dilation.

problem Identifying dual convex bodies based on their Gauss Image Measure.
method Analyzing the Gauss Image Measure and its properties to establish the uniqueness of dual bodies.
result Dual convex bodies are equal up to a dilation on each path-connected component of the support of the measure.

BCD-Net uses identical CNN structures for image recovery in undersampled imaging.

problem Challenges in obtaining accurate images from undersampled or noisy measurements.
method Incorporates image mapping CNN into BCD signal recovery method using alternating direction method of multipliers.
result Significantly more accurate image recovery compared to existing methods.

Generative Map learns interpretable neural network maps for camera localization.

problem Creating interpretable maps for neural network-based camera localization.
method Combining generative models with Kalman filters and incorporating additional sensor information.
result Generative Map predicts images closely resembling the true scene and achieves comparable localization performance.

Non-polynomial growth harmonic maps from the complex plane to the hyperbolic space are studied. Some non-surjectivity results are obtained. Moreover, images of such harmonic maps are investigated with reference to their Hopf differentials.

2000-05-30abs ↗pdf ↗

Localized curvature bounds ensure harmonic maps are constant.

problem Ensuring harmonic maps are constant under localized curvature constraints.
method Localized Bochner-type rigidity theorem for harmonic maps with image-dependent curvature bounds.
result Harmonic maps are constant if minimal Ricci curvature dominates image-dependent curvature bounds.

New real algebraic maps with prescribed images and compositions are constructed locally like moment maps.

problem Constructing real algebraic maps with specific properties and compositions.
method Explicit construction of real algebraic hypersurfaces and maps with prescribed images and compositions.
result Explicit families of functions represented as compositions of constructed maps with canonical projections.

A novel method compresses point cloud attributes by folding them onto a 2D grid.

problem Efficiently compressing point cloud attributes for storage and transmission.
method Interpreting point clouds as 2D manifolds, folding onto a grid, and mapping attributes to the grid using optimized methods.
result The proposed folding-based approach achieves performance comparable to state-of-the-art codecs.

We obtain conditions on the Lee form under which a holomorphic map between almost Hermitian manifolds is a harmonic map or morphism. Then we discuss under what conditions (i) the image of a holomorphic map from a cosymplectic manifold is also cosymplectic, (ii) a holomophic map with Hermitian image defines a Hermitian …

1995-12-18abs ↗pdf ↗

Neural network classifies breast cancer lesions using global and local image features.

problem Classifying breast cancer lesions in medical images with high resolution and small regions of interest.
method Proposes a neural network that combines global saliency maps and local patches for pixel-level saliency maps.
result Achieves radiologist-level performance in screening mammography interpretation.

Johnson has defined a surjective homomorphism from the Torelli subgroup of the mapping class group of the surface of genus gg with one boundary component to 3H\wedge^3 H, the third exterior product of the homology of the surface. Morita then extended Johnson's homomorphism to a homomorphism from the entire mapping cla…

2007-08-28abs ↗pdf ↗

Image visibility graphs map images into graphs for processing and classification.

problem Mapping image structures into graphs for processing and classification.
method Introduced image visibility graphs (IVGs) and explored their use in image processing and classification.
result IVGs encapsulate relevant image structure information and are computationally efficient.

ICAM creates interpretable feature attribution maps for brain images.

problem Challenges in predicting class relevance from brain images due to heterogeneity and background variation.
method A VAE-GAN framework for disentangling class relevance from background features.
result FA maps generated by ICAM outperform baseline methods and support phenotype variation exploration.

A new method improves robustness in image translation by modeling uncertainty.

problem Performance degradation in image translation models due to lack of robustness to outliers and uncertainty.
method UGAC method based on Uncertainty-aware Generalized Adaptive Cycle Consistency, modeling per-pixel residual with generalized Gaussian distribution.
result Our method exhibits stronger robustness towards unseen perturbations in test data.

Study on the parity of fold map singular points, showing non-invariance for odd-dimensional manifolds.

problem Parity of connected components of fold map singular points for odd-dimensional manifolds.
method Constructive proofs using open book decompositions, round fold maps, and allowable moves.
result Parity of connected components is not a homotopy invariant for odd-dimensional manifolds.

We show that Cannon-Thurston maps exist for degenerate free groups without parabolics, i.e. for handlebody groups. Combining these techniques with earlier work proving the existence of Cannon-Thurston maps for surface groups, we show that Cannon-Thurston maps exist for arbitrary finitely generated Kleinian groups witho…

2010-02-04abs ↗pdf ↗

Paper estimates intrinsic dimensionality of image representations and develops DeepMDS for lower-dimensional mapping.

problem Estimating intrinsic dimensionality of image representations.
method Developed DeepMDS, a non-linear mapping from ambient to minimal intrinsic space.
result DeepMDS reduces intrinsic dimensionality while maintaining discriminative ability.

Framework translates unlabeled images between domains.

problem Translating unlabeled images between domains with no supervision.
method Skip-connected encoder-generator structure trained with GAN, cycle, and semantic consistency losses.
result Framework can learn semantic mappings for face images without supervised one-to-one mapping.

KCS improves parametric maps from PET images by reducing noise and variance.

problem Improving the quality of parametric maps from PET images due to noise.
method Kinetic Compressive Sensing (KCS) method based on a hierarchical Bayesian model and novel reconstruction algorithm.
result KCS produces spatially coherent images and parametric maps with lower noise and better contrast.

Finite image of mapping class group representations proved using graph embeddings.

problem Finiteness of images of mapping class group representations in twisted Dijkgraaf-Witten theory.
method Translation of problem into graph manipulation, using TVBW representations and spherical fusion categories.
result Finiteness of images of mapping class group representations in twisted Dijkgraaf-Witten theory is proven.

In this paper we provide a classification of all Moishezon twistor spaces on the connected sum of four complex projective planes. This is given by means of the anticanonical system of the twistor spaces. In particular, we show that the anticanonical map is birational, two to one over the image, or otherwise the image o…

2011-08-06abs ↗pdf ↗

Study on Gauss images of specific minimal surfaces with finite curvature.

problem Characterizing Gauss images of minimal surfaces with finite total curvature.
method Analyzing the number and weight of omitted and totally ramified values of Gauss maps.
result Construction of new minimal surfaces with specific Gauss map properties.

Transforms improve CNNs' invariance to image transformations.

problem Current CNN models lack robustness to spatial transformations.
method Randomly transform feature maps during training to learn invariant representations.
result Significant improvements on benchmark tasks, including image recognition and retrieval.

The paper tackles ambiguous image-to-image translation by modeling a distribution of possible outputs.

problem Ambiguity in image-to-image translation where a single input can have multiple possible outputs.
method The approach involves a conditional generative model that learns to map input images to a latent vector, which is then used to generate diverse outputs.
result The method produces more diverse and realistic outputs compared to other variants.

Generates synthetic laparoscopic images for training deep neural networks.

problem Lack of large labeled data sets for laparoscopic image processing.
method Unpaired image-to-image translation to generate realistic synthetic images.
result Synthetic data set improves liver segmentation performance without manual labeling.

ZegOT uses optimal transport to zero-shot segment images with text prompts.

problem Zero-shot semantic segmentation with limited image-text alignment knowledge.
method ZegOT uses optimal transport to match multiple text prompts with frozen image embeddings.
result ZegOT achieves state-of-the-art performance in zero-shot semantic segmentation.