Image Amplification And Its Implementation Based On The Combination Of Nature Spine And Wavelet

Giant movie screen that shows the screen than the wide-screen movie screen larger than the vertical height film.Giant-screen IMAX film companies have the most advanced technology,the commercialization of the most successful operation,known as "the ultimate film experience."Filming usually use 35 mm film projector directly to the giant screen.Because of a lack of resolution,affecting visual effects.To ensure high-resolution, giant movie screen projector to use the 70mm film format to ensure that the visual quality.Large format film is expensive,an IMAX film camera for 8 minutes,price 1,500 US dollars,IMAX film with the production costs of filming a geometric increase in multiples. IMAX Company's core technology-DMR:by image processing,regular 35 mm film will be made to the 70 mm IMAX format film,which can be produced by the ordinary film onto a large screen film without damage to its quality.IMAX Corporation conversion costly: General giant movie screen conversion cost 200-300 million dollars,the 3-D giant-screen film conversion cost 500-800 million dollars.Not proprietary domestic giant movie screen conversion system,the strong demand for such products,with independent intellectual property development giant movie screen technology is the general trend of China's film industry.The overall restructuring process of Giant movie screen is as follows,the first 35 mm film scanning into a series of continuous digital image,and then the image preprocessing,and then the image after pretreatment to enlarge to 70 mm film needs. On the realization of the process of conversion,image amplification technology is the crucial step,of course,also includes many other aspects of image processing technology, such as image noise suppression,image enhancement techniques.However, these technologies do not as the principal topics of discussion in this paper.As the giant movie screen conversion process need to use high-quality images to enlarge technology,and methods currently available have a corresponding defect,and behind will be talk about inadequacies of the existing methods in detail,in order to make up for the inadequacies,Image amplification and its implementation based on the combination of nature spine and wavelet is mentioned by this paper.Larger image quality should satisfy at least two conditions:first,when the larger image to be reduced to the original size,and must be as close as possible to the original image;Second,by amplifying image in the visual effects,it should be looked natural and comfortable.It is precisely because of such high-quality image to enlarge the request,said that to find an effective method to enlarge the image on the process become the most crucial step.Below on the existing categories of amplification methods were discussed to illustrate to find an effective method to enlarge the importance of image. The previous image to enlarge algorithm is broadly divided into the following categories:The first category is a particular function will be used as an interpolation function.Currently,fully functional digital image magnification of the technology is to enlarge the interpolation methods,including the nearest neighbor interpolation,linear interpolation,double square interpolation, double-cubic interpolation,other high-order method.The nearest neighbor interpolation and the poor quality of bilinear interpolation to enlarge,prone to zigzag,it is not generally used in the high requirements.And the high-order,because more computing capacity generally is not used.Compromise is a two-way dual-cubic interpolation and square interpolation,the above method is the essence of the "low-pass filter",so images will have different levels of degradation details.Interpolation methods to enhance image smoothing effect of the lost High-frequency information,sometimes these details are very important information,how to ensure that the smoothing effect at the same time retained as far as possible the details is very valuable.The second category make use of wavelet and fractal of relationship to realize the image interpolation,as the role played by the wavelet is primarily used for extracting fractal parameter,so the method is essentially based on the fractal model; fractal interpolation as based on substituting function of the system will cause box effect,it is generally not accepted. VII The third category method operated image itself as the low-frequency component,structure a high-frequency component of utilizing some means after the inverse wavelet transform image to enlarge.The biggest disadvantage of this method can only achieve the original image to enlarge the integer.This is exactly what the giant movie screen magnification want.Therefore,the above three types of algorithm that can not meet the giant movie screen in the image to enlarge application.In order to meet the giant movie screen in the image to enlarge application requirements,this paper presents a kind algorithm based on combination of natural spine and wavelet.The amplification method based on the above make up for the loss of details of the flaw based on interpolation methods,while realizing an image of the arbitrary multiples of amplification, despite of a single natural spine approach can have on the image of arbitrary multiples of amplification, But to a certain extent, details will be declined,or even lost,so to use wavelet method to enlarge the image of the high-frequency coefficients to adjust the use of this combination of the two methods to enlarge images can be arbitrary multiplier of the larger image but also take into account the image details,so the method may be applied to the giant-screen film technology in a good amplification method.Of course,there are still some shortcomings in this paper. It is also necessary to further improve and optimize the place. Such as noise suppression and the strengthening of the non noise signal needs further study and discussion.