### AIMS Mathematics

2021, Issue 1: 66-76. doi: 10.3934/math.2021005
Research article

# On geometry of isophote curves in Galilean space

• Received: 17 July 2020 Accepted: 07 September 2020 Published: 28 September 2020
• MSC : 53A35, 53Z05

• In this paper, we introduce isophote curves on surfaces in Galilean 3-space. Apart from the general concept of isophotes, we split our studies into two cases to get the axis d of isophote curves lying on a surface such that d is an isotropic or a non-isotropic vector. We also give a method to compute isophote curves of surfaces of revolution. Subsequently, we show the relationship between isophote curves and slant (general) helices on surfaces of revolution obtained by revolving a curve by Euclidean rotations. Finally, we give some characterizations for isophote curves lying on surfaces of revolution.

Citation: Zuhal Küçükarslan Yüzbașı, Dae Won Yoon. On geometry of isophote curves in Galilean space[J]. AIMS Mathematics, 2021, 6(1): 66-76. doi: 10.3934/math.2021005

### Related Papers:

• In this paper, we introduce isophote curves on surfaces in Galilean 3-space. Apart from the general concept of isophotes, we split our studies into two cases to get the axis d of isophote curves lying on a surface such that d is an isotropic or a non-isotropic vector. We also give a method to compute isophote curves of surfaces of revolution. Subsequently, we show the relationship between isophote curves and slant (general) helices on surfaces of revolution obtained by revolving a curve by Euclidean rotations. Finally, we give some characterizations for isophote curves lying on surfaces of revolution.

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沈阳化工大学材料科学与工程学院 沈阳 110142

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