{"title":"二元采样Kantorovich算子的新推广及其在图像处理中的应用","authors":"Metin Turgay, Tuncer Acar","doi":"10.1002/mma.70025","DOIUrl":null,"url":null,"abstract":"<p>In this paper, we introduce bivariate modified sampling Kantorovich operators, which extend the classical sampling Kantorovich operators by incorporating a transformation function \n<span></span><math>\n <semantics>\n <mrow>\n <mi>ρ</mi>\n </mrow>\n <annotation>$$ \\rho $$</annotation>\n </semantics></math>. The paper begins by presenting essential definitions, including to introduce new bivariate weighted modulus of continuity, and its fundamental properties. The newly constructed operators are studied in terms of pointwise and uniform convergence in spaces of continuous functions. We investigate weighted approximation properties of the family of operators in weighted spaces of functions constructed by \n<span></span><math>\n <semantics>\n <mrow>\n <mi>ρ</mi>\n </mrow>\n <annotation>$$ \\rho $$</annotation>\n </semantics></math>. Moreover, we study modular convergence of these operators in Orlicz spaces \n<span></span><math>\n <semantics>\n <mrow>\n <msup>\n <mrow>\n <mi>L</mi>\n </mrow>\n <mrow>\n <mi>η</mi>\n </mrow>\n </msup>\n <mfenced>\n <mrow>\n <msup>\n <mrow>\n <mi>ℝ</mi>\n </mrow>\n <mrow>\n <mn>2</mn>\n </mrow>\n </msup>\n </mrow>\n </mfenced>\n </mrow>\n <annotation>$$ {L}&amp;#x0005E;{\\eta}\\left({\\mathbb{R}}&amp;#x0005E;2\\right) $$</annotation>\n </semantics></math>. Finally, we present some \n<span></span><math>\n <semantics>\n <mrow>\n <mi>ρ</mi>\n </mrow>\n <annotation>$$ \\rho $$</annotation>\n </semantics></math>-kernels and applications to image processing. The newly constructed operators present better process and higher PSNR value for some parameters \n<span></span><math>\n <semantics>\n <mrow>\n <mi>w</mi>\n </mrow>\n <annotation>$$ w $$</annotation>\n </semantics></math> and function \n<span></span><math>\n <semantics>\n <mrow>\n <mi>ρ</mi>\n </mrow>\n <annotation>$$ \\rho $$</annotation>\n </semantics></math>.</p>","PeriodicalId":49865,"journal":{"name":"Mathematical Methods in the Applied Sciences","volume":"48 16","pages":"15413-15432"},"PeriodicalIF":1.8000,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mma.70025","citationCount":"0","resultStr":"{\"title\":\"A New Generalization of Bivariate Sampling Kantorovich Operators and Applications to Image Processing\",\"authors\":\"Metin Turgay, Tuncer Acar\",\"doi\":\"10.1002/mma.70025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this paper, we introduce bivariate modified sampling Kantorovich operators, which extend the classical sampling Kantorovich operators by incorporating a transformation function \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <mi>ρ</mi>\\n </mrow>\\n <annotation>$$ \\\\rho $$</annotation>\\n </semantics></math>. The paper begins by presenting essential definitions, including to introduce new bivariate weighted modulus of continuity, and its fundamental properties. The newly constructed operators are studied in terms of pointwise and uniform convergence in spaces of continuous functions. We investigate weighted approximation properties of the family of operators in weighted spaces of functions constructed by \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <mi>ρ</mi>\\n </mrow>\\n <annotation>$$ \\\\rho $$</annotation>\\n </semantics></math>. Moreover, we study modular convergence of these operators in Orlicz spaces \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <msup>\\n <mrow>\\n <mi>L</mi>\\n </mrow>\\n <mrow>\\n <mi>η</mi>\\n </mrow>\\n </msup>\\n <mfenced>\\n <mrow>\\n <msup>\\n <mrow>\\n <mi>ℝ</mi>\\n </mrow>\\n <mrow>\\n <mn>2</mn>\\n </mrow>\\n </msup>\\n </mrow>\\n </mfenced>\\n </mrow>\\n <annotation>$$ {L}&amp;#x0005E;{\\\\eta}\\\\left({\\\\mathbb{R}}&amp;#x0005E;2\\\\right) $$</annotation>\\n </semantics></math>. Finally, we present some \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <mi>ρ</mi>\\n </mrow>\\n <annotation>$$ \\\\rho $$</annotation>\\n </semantics></math>-kernels and applications to image processing. The newly constructed operators present better process and higher PSNR value for some parameters \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <mi>w</mi>\\n </mrow>\\n <annotation>$$ w $$</annotation>\\n </semantics></math> and function \\n<span></span><math>\\n <semantics>\\n <mrow>\\n <mi>ρ</mi>\\n </mrow>\\n <annotation>$$ \\\\rho $$</annotation>\\n </semantics></math>.</p>\",\"PeriodicalId\":49865,\"journal\":{\"name\":\"Mathematical Methods in the Applied Sciences\",\"volume\":\"48 16\",\"pages\":\"15413-15432\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2025-08-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mma.70025\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mathematical Methods in the Applied Sciences\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/mma.70025\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematical Methods in the Applied Sciences","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mma.70025","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
A New Generalization of Bivariate Sampling Kantorovich Operators and Applications to Image Processing
In this paper, we introduce bivariate modified sampling Kantorovich operators, which extend the classical sampling Kantorovich operators by incorporating a transformation function
. The paper begins by presenting essential definitions, including to introduce new bivariate weighted modulus of continuity, and its fundamental properties. The newly constructed operators are studied in terms of pointwise and uniform convergence in spaces of continuous functions. We investigate weighted approximation properties of the family of operators in weighted spaces of functions constructed by
. Moreover, we study modular convergence of these operators in Orlicz spaces
. Finally, we present some
-kernels and applications to image processing. The newly constructed operators present better process and higher PSNR value for some parameters
and function
.
期刊介绍:
Mathematical Methods in the Applied Sciences publishes papers dealing with new mathematical methods for the consideration of linear and non-linear, direct and inverse problems for physical relevant processes over time- and space- varying media under certain initial, boundary, transition conditions etc. Papers dealing with biomathematical content, population dynamics and network problems are most welcome.
Mathematical Methods in the Applied Sciences is an interdisciplinary journal: therefore, all manuscripts must be written to be accessible to a broad scientific but mathematically advanced audience. All papers must contain carefully written introduction and conclusion sections, which should include a clear exposition of the underlying scientific problem, a summary of the mathematical results and the tools used in deriving the results. Furthermore, the scientific importance of the manuscript and its conclusions should be made clear. Papers dealing with numerical processes or which contain only the application of well established methods will not be accepted.
Because of the broad scope of the journal, authors should minimize the use of technical jargon from their subfield in order to increase the accessibility of their paper and appeal to a wider readership. If technical terms are necessary, authors should define them clearly so that the main ideas are understandable also to readers not working in the same subfield.