Title: A visual effect enhancement method of print advertisement based on Sobel operator filtering

Authors: Fang Wang; Huaxi Chen

Addresses: School of Art and Design, Bengbu University, Bengbu 233030, China ' School of Science, Bengbu University, Bengbu 233030, China

Abstract: Aiming at the problems of long enhancement time, low image entropy and poor visual effects of traditional methods, a method for enhancing the visual effects of plane advertisements based on Sobel operator filtering is proposed. Through DCT coefficient and target contour extraction algorithm, the edge contour of the flat advertisement image is accurately extracted, and the hyperspectral sensor is used to sparse the contour extraction result to achieve the image denoising effect. Finally, the Sobel operator filter is used to remove part of the interference in the image background, highlight the small targets in the image, and supplement the missing points in the image to achieve the enhancement of the visual effect of the print advertisement. Experimental results show that the proposed method can achieve image enhancement in a shorter time, and the image entropy value is relatively high, indicating that the method can retain a large amount of image detail information, and the subjective visual effect is better, in line with human visual standards, and sufficient verify the effectiveness of the method.

Keywords: Sobel operator filter; print advertisement; visual effect enhancement; DCT coefficient; target contour extraction algorithm.

DOI: 10.1504/IJICT.2023.131220

International Journal of Information and Communication Technology, 2023 Vol.22 No.4, pp.391 - 403

Received: 26 Jan 2021
Accepted: 24 Apr 2021
Published online: 01 Jun 2023 *

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