In remote sensing, images acquired by various earth observation satellites tend to have either a high spatial and low spectral resolution or vice versa. Pansharpening is a technique which aims to improve spatial resolution of multispectral image. The challenges involve in the pansharpening are not only to improve the spatial resolution but also to preserve spectral quality of the multispectral ...

Intensity-Hue-Saturation (IHS) and Principal Component Analysis (PCA) are two famous methods to which image fusion algorithms can be reported when merging panchromatic (Pan) and multispectral (MS) images, acquired with different spatial and spectral resolutions. The IHS is a wellknown pan-sharpening approach widely used for its efficiency and high spatial resolution. However, it can distort the...

Digital images suffer blurring from various known and unknown point spread functions. Image restoration from degraded image is very big problem in image processing. Image restoration is a process by which a noisy or degraded image is converted into nearly an original image. Improvement in the appearance of the image is done by image restoration. In this paper a Memetic Algorithm is used to rest...

background: due to the increased growing heart diseases and necessity to do heart surgery, as well as the importance role of rehabilitation in reducing patient’s mortality, patient’s promotion body image and quality of life should be proposed as one of the main goals of treatment interference. this research was performed with the goal to identify the process of   rehabilitation period on the ch...

C-arm computed tomography reconstruction of multiple cardiac phases could provide a highly useful tool to interventional cardiologists in the catheter laboratory. Today, however, for clinically reasonable acquisition protocols the achievable image quality is still severely limited due to undersampling artifacts. We propose an iterative optimization scheme combining image registration, motion co...

Noise will be unavoidable during image acquisition process and denosing is an essential step to improve the image quality. Image denoising involves the manipulation of the image data to produce a visually high quality image. Finding efficient image denoising methods is still valid challenge in image processing. Wavelet denoising attempts to remove the noise present in the imagery while preservi...

Recently, image steganography has received a lot of attention as it enables for secure multimedia communication. Payload capacity and stego image imperceptibility are a critical factors of any steganographic technique. In order to receive maximum embedding capacity with a minimum degradation of stego images, secret data should be embedded carefully in a specific regions. In this paper, data hid...

The main objective of this paper is to develop a simple technique for contrast enhancement of monochrome and color images using Discrete Dual Hahn (DDH) moments. The basic idea of our approach is to measure a local contrast at each band of a DDH moment matrix and use it to modify them. These modified moments are used to construct the enhanced image by taking the inverse DDH moment transform. Fo...

SAR change detection performance using coherent change detection (CCD) and non-coherent change detection (NCCD) algorithms is demonstrated using high-resolution synthetic aperture radar (SAR) imagery gathered by the General Dynamics Data Collection System. CCD performance comparisons using phaseonly imagery versus complex (amplitude and phase) imagery are also presented. A new image quality met...