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Compression methods are being rapidly developed to compress large
data files such as images, where data compression in multimedia
applications has lately become more vital .With the increasing
growth of technology and the entrance into the digital age, a vast
amount of image data must be handled to be stored in a proper way
using efficient methods usually succeed in compressing images,
while retaining high image quality and marginal reduction in image
size .Wavelets are a mathematical tool for hierarchically
decomposing functions. Image compression using Wavelet Transforms
is a powerful method that is preferred by scientists to get the
compressed images at higher compression ratios with higher PSNR
values.
Cotton is an important commercial crop in India and plays a key
role in national economy.For the past two decades, the national
average of 440 kg/ha has not increased when compared to world
average of 682 kg/ha. About 134 species of arthropods were found to
be associated with the cotton crop in Punjab, of which bollworms
cause serious damage. Among the bollworms, Helicoverpa armigera is
a very serious polyphagous pest.Biological, cultural and chemical
methods have been used to attempt its control.The extensive and
indiscriminate use of conventional insecticides as well as
synthetic pyrethroids against H. armigera has resulted in
development of resistance to various insecticides.A novel method of
controlling this pest is use of Bt cry toxin from a soil bacterium,
Bacillus thuringiensis (Bt).Since its release has been able to
reduce the use of chemical insecticide, thereby lowering the risks
pertaining to environmental hazards, human health and production
costs.The insertion of an additional Bt gene encoding for a
different toxin (Cry2Ab) into current Bt cotton cultivars
containing cry1Ac gene may provide additional activity on
lepidopteran pests and would improve pest control val
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