In this paper, the advantages of discrete cosine transform and discrete wavelet transform have been harnessed by considering them together for compression, followed by an energy efficient Secured Force encryption technique. This was done in order to simultaneously compress and encrypt the image that has to be transmitted through Wireless Media Sensor Network (WMSN). The proposed technique provides better and faster compression as compared to the existing techniques. Results show that, there is an average increase of 4 % in compression with respect to DCT based compression and DWT based compression. Also, in the proposed approach, Chroma cr. matrix is used for quantization, which has reduced the total processing time by a huge amount as compared to the other quantization matrices.