FORENSIC IMAGE ENHANCEMENT &
WHAT IS IMAGE ENHANCEMENT?
Image enhancement or image clarification is any process intended to improve the visual appearance of an image (“6.1 ASTM E2825-19 Standard Guide for Forensic Digital Image Processing”).
Images can be enhanced or clarified for courtroom use to assist the trier of fact in making determinations about the objects or subjects events contained within them. Images extracted from video recordings can also be enhanced for courtroom use.
IMAGE ENHANCEMENT PROCESSES WE OFFER:
LICENSE PLATE ENHANCEMENT
We have the ability to correct distorted or compressed license plate imagery from surveillance video evidence. We can correct the perspective of objects, as well as clarify blurred images of cars in motion.
Deblurring is the process of removing blurring artifacts from images [input image say B which is blurred image which generally happens due to camera shake or some other phenomenon].
PIXEL INTERPOLATION (ZOOM)
Photo interpolation is the process by which the number of pixels comprising an image is increased to allow printing enlargements that are of higher quality than photos that are not interpolated.
Frame averaging is a technique to get better statistics, that is more image data or a better signal to noise ratio (SNR) in your images. Increasing the dwell time per pixel is the primary way to improve these qualities in an image, but can result in image artifacts such as charging.
Image sharpening is an effect applied to digital images to give them a sharper appearance. Almost all lenses can benefit from at least a small amount of sharpening.
Deinterlacing is the process of converting interlaced video into a non-interlaced or progressive form. Interlaced video signals are commonly found in analog television, digital television (HDTV) when in the 1080i format, some DVD titles, and a smaller number of Blu-ray discs.
IMAGE NOISE REDUCTION
Noise means, the pixels in the image show different intensity values instead of true pixel values that are obtained from image. Noise removal algorithm is the process of removing or reducing the noise from the image
Overexposure is a term used to describe the process of exposing film to too much light, which results in the photograph being too bright. In digital photography, where there is no film, overexposure refers to a white-looking or washed-out image (overexposed image).
REDUCE COMPRESSION ARTIFACTS
A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Our processes can reduce the amount of JPEG compression in an image.
Image Stabilization is a feature that can potentially help create sharper images, by compensating for slight shakes or vibrations in the camera, usually when capturing photos hand-held.