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The multilayer secured DWT-DCT and YIQ color space based image watermarkingtechnique with robustness and better correlation is presented here. Thesecurity levels are increased by using multiple pn sequences, Arnoldscrambling, DWT domain, DCT domain and color space conversions. Peak signal tonoise ratio and Normalized correlations are used as measurement metrics. The512x512 sized color images with different histograms are used for testing andwatermark of size 64x64 is embedded in HL region of DWT and 4x4 DCT is used.'Haar' wavelet is used for decomposition and direct flexing factor is used. Wegot PSNR value is 63.9988 for flexing factor k=1 for Lena image and the maximumNC 0.9781 for flexing factor k=4 in Q color space. The comparative performancein Y, I and Q color space is presented. The technique is robust for differentattacks like scaling, compression, rotation etc.

Secured color image watermarking technique in DWT-DCT domain